/* source: xioopts.c */
/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
/* Published under the GNU General Public License V.2, see file COPYING */

/* this file contains the source for address options handling */

#include "xiosysincludes.h"
#include "xioopen.h"
#include "xio-unix.h"
#include "xio-ip.h"

#include "xiomodes.h"
#include "xiolockfile.h"
#include "nestlex.h"
#include "xiohelp.h"

bool xioopts_ignoregroups;

#define IF_ANY(a,b) {a,b},

#if WITH_NAMED
#  define IF_NAMED(a,b) {a,b},
#else
#  define IF_NAMED(a,b)
#endif

#if WITH_PIPE || WITH_GOPEN
#  define IF_OPEN(a,b) {a,b},
#else
#  define IF_OPEN(a,b)
#endif

#if WITH_TERMIOS
#  define IF_TERMIOS(a,b) {a,b},
#else
#  define IF_TERMIOS(a,b)
#endif

#if WITH_EXEC
#  define IF_EXEC(a,b) {a,b},
#else
#  define IF_EXEC(a,b)
#endif

#if _WITH_SOCKET
#  define IF_SOCKET(a,b) {a,b},
#else
#  define IF_SOCKET(a,b)
#endif

#if WITH_LISTEN
#  define IF_LISTEN(a,b) {a,b},
#else
#  define IF_LISTEN(a,b)
#endif

#if (WITH_UDP || WITH_TCP) && WITH_LISTEN
#  define IF_RANGE(a,b) {a,b},
#else
#  define IF_RANGE(a,b)
#endif

#if WITH_IP4 || WITH_IP6
#  define IF_IP(a,b) {a,b},
#else
#  define IF_IP(a,b)
#endif

#if WITH_IP6
#  define IF_IP6(a,b) {a,b},
#else
#  define IF_IP6(a,b)
#endif

#if WITH_TCP|WITH_UDP
#  define IF_IPAPP(a,b) {a,b},
#else
#  define IF_IPAPP(a,b)
#endif

#if WITH_TCP
#  define IF_TCP(a,b) {a,b},
#else
#  define IF_TCP(a,b)
#endif

#if WITH_UDP
#  define IF_UDP(a,b) {a,b},
#else
#  define IF_UDP(a,b)
#endif

#if WITH_SCTP
#  define IF_SCTP(a,b) {a,b},
#else
#  define IF_SCTP(a,b)
#endif

#if WITH_DCCP
#  define IF_DCCP(a,b) {a,b},
#else
#  define IF_DCCP(a,b)
#endif

#if WITH_UDPLITE
#  define IF_UDPLITE(a,b) {a,b},
#else
#  define IF_UDPLITE(a,b)
#endif

#if WITH_SOCKS4
#  define IF_SOCKS4(a,b) {a,b},
#else
#  define IF_SOCKS4(a,b)
#endif

#if WITH_PROXY
#  define IF_PROXY(a,b) {a,b},
#else
#  define IF_PROXY(a,b)
#endif

#if WITH_READLINE
#  define IF_READLINE(a,b) {a,b},
#else
#  define IF_READLINE(a,b)
#endif

#if WITH_PTY
#  define IF_PTY(a,b) {a,b},
#else
#  define IF_PTY(a,b)
#endif

#if WITH_OPENSSL
#  define IF_OPENSSL(a,b) {a,b},
#else
#  define IF_OPENSSL(a,b)
#endif

#if WITH_RESOLVE
#  define IF_RESOLVE(a,b) {a,b},
#else
#  define IF_RESOLVE(a,b)
#endif

#if WITH_INTERFACE
#  define IF_INTERFACE(a,b) {a,b},
#else
#  define IF_INTERFACE(a,b)
#endif

#if WITH_TUN
#  define IF_TUN(a,b) {a,b},
#else
#  define IF_TUN(a,b)
#endif

#if WITH_UNIX
#  define IF_UNIX(a,b) {a,b},
#else
#  define IF_UNIX(a,b)
#endif

#if WITH_RETRY
#  define IF_RETRY(a,b) {a,b},
#else
#  define IF_RETRY(a,b)
#endif


static int applyopt_offset(struct single *sfd, struct opt *opt);
static int applyopt(struct single *sfd,	int fd,	struct opt *opt);


/* address options - keep this array strictly alphabetically sorted for
   binary search! */
/* NULL terminated */
const struct optname optionnames[] = {
#if HAVE_RESOLV_H && WITH_RES_AAONLY
	IF_RESOLVE("aaonly",		&opt_res_aaonly)
#endif
#ifdef TCP_ABORT_THRESHOLD  /* HP_UX */
	IF_TCP    ("abort-threshold",	&opt_tcp_abort_threshold)
#endif
	IF_LISTEN ("accept-timeout",	&opt_accept_timeout)
#ifdef SO_ACCEPTCONN /* AIX433 */
	IF_SOCKET ("acceptconn",	&opt_so_acceptconn)
#endif /* SO_ACCEPTCONN */
#ifdef IP_ADD_MEMBERSHIP
	IF_IP     ("add-membership",	&opt_ip_add_membership)
#endif
#if defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP)
	IF_IP     ("add-source-membership",	&opt_ip_add_source_membership)
#endif
#if defined(AI_ADDRCONFIG)
	IF_IP	  ("addrconfig", 		&opt_ai_addrconfig)
#endif
#if defined(AI_ADDRCONFIG)
	IF_IP	  ("ai-addrconfig", 		&opt_ai_addrconfig)
#endif
#if defined(AI_ALL)
	IF_IP	  ("ai-all", 			&opt_ai_all)
#endif
#if defined(AI_PASSIVE	)
	IF_IP	  ("ai-passive", 		&opt_ai_passive)
#endif
#if defined(AI_V4MAPPED)
	IF_IP	  ("ai-v4mapped", 		&opt_ai_v4mapped)
#endif
	IF_INTERFACE("allmulti",	&opt_iff_allmulti)
#if WITH_LIBWRAP && defined(HAVE_HOSTS_ALLOW_TABLE)
	IF_IPAPP  ("allow-table",	&opt_tcpwrap_hosts_allow_table)
#endif
	IF_ANY    ("append",	&opt_append)
#ifdef O_ASYNC
	IF_ANY    ("async",	&opt_async)
#endif
#ifdef SO_ATTACH_FILTER
	IF_SOCKET ("attach-filter",	&opt_so_attach_filter)
	IF_SOCKET ("attachfilter",	&opt_so_attach_filter)
#endif
#ifdef SO_AUDIT	/* AIX 4.3.3 */
	IF_SOCKET ("audit",	&opt_so_audit)
#endif /* SO_AUDIT */
#ifdef IPV6_AUTHHDR
	IF_IP6    ("authhdr",	&opt_ipv6_authhdr)
#endif
#ifdef IFF_AUTOMEDIA
	IF_INTERFACE("automedia",	&opt_iff_automedia)
#endif
#ifdef CBAUD
	IF_TERMIOS("b0",	&opt_b0)
#ifdef B1000000
	IF_TERMIOS("b1000000",	&opt_b1000000)
#endif
	IF_TERMIOS("b110",	&opt_b110)
#ifdef B115200
	IF_TERMIOS("b115200",	&opt_b115200)
#endif
#ifdef B1152000
	IF_TERMIOS("b1152000",	&opt_b1152000)
#endif
	IF_TERMIOS("b1200",	&opt_b1200)
	IF_TERMIOS("b134",	&opt_b134)
	IF_TERMIOS("b150",	&opt_b150)
#ifdef B1500000
	IF_TERMIOS("b1500000",	&opt_b1500000)
#endif
	IF_TERMIOS("b1800",	&opt_b1800)
	IF_TERMIOS("b19200",	&opt_b19200)
	IF_TERMIOS("b200",	&opt_b200)
#ifdef B2000000
	IF_TERMIOS("b2000000",	&opt_b2000000)
#endif
#ifdef B230400
	IF_TERMIOS("b230400",	&opt_b230400)
#endif
	IF_TERMIOS("b2400",	&opt_b2400)
#ifdef B2500000
	IF_TERMIOS("b2500000",	&opt_b2500000)
#endif
	IF_TERMIOS("b300",	&opt_b300)
#ifdef B3000000
	IF_TERMIOS("b3000000",	&opt_b3000000)
#endif
#ifdef B3500000
	IF_TERMIOS("b3500000",	&opt_b3500000)
#endif
#ifdef B3600	/* HP-UX */
	IF_TERMIOS("b3600",	&opt_b3600)
#endif
	IF_TERMIOS("b38400",	&opt_b38400)
#ifdef B4000000
	IF_TERMIOS("b4000000",	&opt_b4000000)
#endif
#ifdef B460800
	IF_TERMIOS("b460800",	&opt_b460800)
#endif
	IF_TERMIOS("b4800",	&opt_b4800)
	IF_TERMIOS("b50",	&opt_b50)
#ifdef B500000
	IF_TERMIOS("b500000",	&opt_b500000)
#endif
#ifdef B57600
	IF_TERMIOS("b57600",	&opt_b57600)
#endif
#ifdef B576000
	IF_TERMIOS("b576000",	&opt_b576000)
#endif
	IF_TERMIOS("b600",	&opt_b600)
#ifdef B7200	/* HP-UX */
	IF_TERMIOS("b7200",	&opt_b7200)
#endif
	IF_TERMIOS("b75",	&opt_b75)
#ifdef B900	/* HP-UX */
	IF_TERMIOS("b900",	&opt_b900)
#endif
#ifdef B921600
	IF_TERMIOS("b921600",	&opt_b921600)
#endif
	IF_TERMIOS("b9600",	&opt_b9600)
#endif /* defined(CBAUD) */
	IF_LISTEN ("backlog",	&opt_backlog)
#ifdef O_BINARY
	IF_OPEN   ("bin",		&opt_o_binary)
	IF_OPEN   ("binary",		&opt_o_binary)
#endif
	IF_SOCKET ("bind",	&opt_bind)
	IF_UNIX   ("bind-tempname",	&xioopt_unix_bind_tempname)
#ifdef SO_BINDTODEVICE
	IF_SOCKET ("bindtodevice",	&opt_so_bindtodevice)
#endif
	IF_TERMIOS("brkint",	&opt_brkint)
	IF_SOCKET ("broadcast",	&opt_so_broadcast)
#ifdef BSDLY
#  ifdef BS0
	IF_TERMIOS("bs0",	&opt_bs0)
#  endif
#  ifdef BS1
	IF_TERMIOS("bs1",	&opt_bs1)
#  endif
#endif
#ifdef SO_BSDCOMPAT
	IF_SOCKET ("bsdcompat",	&opt_so_bsdcompat)
#endif
#ifdef BSDLY
	IF_TERMIOS("bsdly",	&opt_bsdly)
#endif
	IF_ANY    ("bytes",     &opt_readbytes)
	IF_OPENSSL("cafile",	&opt_openssl_cafile)
	IF_OPENSSL("capath",	&opt_openssl_capath)
#if defined(SOL_DCCP) && defined(DCCP_SOCKOPT_QPOLICY_ID)
	IF_DCCP   ("ccid",	&xioopt_dccp_set_ccid)
#endif
	IF_ANY	  ("cd", 		&opt_chdir)
	IF_OPENSSL("cert",	&opt_openssl_certificate)
	IF_OPENSSL("certificate",	&opt_openssl_certificate)
	IF_TERMIOS("cfmakeraw",		&opt_termios_cfmakeraw)
	IF_ANY	  ("chdir", 		&opt_chdir)
#if WITH_LISTEN
	IF_ANY    ("children-shutup",	&opt_children_shutup)
#endif
	IF_ANY    ("chroot",	&opt_chroot)
	IF_ANY    ("chroot-early",	&opt_chroot_early)
	/*IF_TERMIOS("cibaud",	&opt_cibaud)*/
	IF_OPENSSL("cipher",	&opt_openssl_cipherlist)
	IF_OPENSSL("cipherlist",	&opt_openssl_cipherlist)
	IF_OPENSSL("ciphers",	&opt_openssl_cipherlist)
#ifdef SO_CKSUMRECV
	IF_SOCKET ("cksumrecv",	&opt_so_cksumrecv)
#endif /* SO_CKSUMRECV */
	/*IF_NAMED  ("cleanup",	&opt_cleanup)*/
	IF_TERMIOS("clocal",	&opt_clocal)
	IF_ANY    ("cloexec",	&opt_cloexec)
	IF_ANY    ("close",	&opt_end_close)
	IF_OPENSSL("cn",		&opt_openssl_commonname)
	IF_OPENSSL("commonname",	&opt_openssl_commonname)
#if WITH_FS && defined(FS_COMPR_FL)
	IF_ANY    ("compr",	&opt_fs_compr)
#endif
#if OPENSSL_VERSION_NUMBER >= 0x00908000L && !defined(OPENSSL_NO_COMP)
	IF_OPENSSL("compress",	&opt_openssl_compress)
#endif
#ifdef TCP_CONN_ABORT_THRESHOLD  /* HP_UX */
	IF_TCP    ("conn-abort-threshold",	&opt_tcp_conn_abort_threshold)
#endif
	IF_SOCKET ("connect-timeout",	&opt_connect_timeout)
	IF_LISTEN ("cool-write",	&opt_cool_write)
	IF_LISTEN ("coolwrite",	&opt_cool_write)
#ifdef TCP_CORK
	IF_TCP    ("cork",	&opt_tcp_cork)
#endif
	IF_ANY    ("cr",        &opt_cr)
#ifdef CRDLY
#  ifdef CR0
	IF_TERMIOS("cr0",	&opt_cr0)
#  endif
#  ifdef CR1
	IF_TERMIOS("cr1",	&opt_cr1)
#  endif
#  ifdef CR2
	IF_TERMIOS("cr2",	&opt_cr2)
#  endif
#  ifdef CR3
	IF_TERMIOS("cr3",	&opt_cr3)
#  endif
#  if CRDLY_SHIFT >= 0
	IF_TERMIOS("crdly",	&opt_crdly)
#  endif
#endif /* defined(CRDLY) */
	IF_TERMIOS("cread",	&opt_cread)
	IF_OPEN   ("creat",	&opt_o_create)
	IF_OPEN   ("create",	&opt_o_create)
	IF_ANY    ("crlf",      &opt_crnl)
	IF_ANY    ("crnl",      &opt_crnl)
	IF_TERMIOS("crterase",	&opt_echoe)
	IF_TERMIOS("crtkill",	&opt_echoke)
#ifdef CRTSCTS
	IF_TERMIOS("crtscts",	&opt_crtscts)
#endif
	IF_TERMIOS("cs5",	&opt_cs5)
	IF_TERMIOS("cs6",	&opt_cs6)
	IF_TERMIOS("cs7",	&opt_cs7)
	IF_TERMIOS("cs8",	&opt_cs8)
#if CSIZE_SHIFT >= 0
	IF_TERMIOS("csize",	&opt_csize)
#endif
	IF_TERMIOS("cstopb",	&opt_cstopb)
	IF_TERMIOS("ctlecho",	&opt_echoctl)
	IF_TERMIOS("ctty",	&opt_tiocsctty)
	IF_EXEC   ("dash",	&opt_dash)
#if defined(SOL_DCCP) && defined(DCCP_SOCKOPT_QPOLICY_ID)
	IF_DCCP   ("dccp-set-ccid",	&xioopt_dccp_set_ccid)
#endif
	IF_SOCKET ("debug",	&opt_so_debug)
	/*IF_RESOLVE("debug",	&opt_res_debug)*/
#ifdef O_DEFER
	IF_OPEN   ("defer",	&opt_o_defer)
#endif
#ifdef TCP_DEFER_ACCEPT	/* Linux 2.4.0 */
	IF_TCP    ("defer-accept",	&opt_tcp_defer_accept)
#endif
#if HAVE_RESOLV_H
	IF_RESOLVE("defnames",		&opt_res_defnames)
#endif /* HAVE_RESOLV_H */
#ifdef O_DELAY
	IF_OPEN   ("delay",	&opt_o_delay)
#endif
	IF_NAMED  ("delete",	&opt_unlink)
#if WITH_LIBWRAP && defined(HAVE_HOSTS_DENY_TABLE)
	IF_IPAPP  ("deny-table",	&opt_tcpwrap_hosts_deny_table)
#endif
#ifdef SO_DETACH_FILTER
	IF_SOCKET ("detach-filter", &opt_so_detach_filter)
	IF_SOCKET ("detachfilter",  &opt_so_detach_filter)
#endif
#ifdef SO_DGRAM_ERRIND
	IF_SOCKET ("dgram-errind",	&opt_so_dgram_errind)
	IF_SOCKET ("dgramerrind",	&opt_so_dgram_errind)
#endif
	IF_OPENSSL("dh",	&opt_openssl_dhparam)
	IF_OPENSSL("dhparam",	&opt_openssl_dhparam)
	IF_OPENSSL("dhparams",	&opt_openssl_dhparam)
#ifdef O_DIRECT
	IF_OPEN   ("direct",	&opt_o_direct)
#endif
#ifdef O_DIRECTORY
	IF_OPEN   ("directory",	&opt_o_directory)
#endif
#if WITH_FS && defined(FS_DIRSYNC_FL)
	IF_ANY    ("dirsync",	&opt_fs_dirsync)
#endif
#ifdef VDISCARD
	IF_TERMIOS("discard",	&opt_vdiscard)
#endif
#if WITH_RESOLVE && HAVE_RESOLV_H && HAVE_RES_NSADDR_LIST
	IF_IP     ("dns",		&opt_res_nsaddr)
#endif
#if HAVE_RESOLV_H
	IF_RESOLVE("dnsrch",		&opt_res_dnsrch)
#endif /* HAVE_RESOLV_H */
#ifdef SO_DONTLINGER
	IF_SOCKET ("dontlinger",	&opt_so_dontlinger)
#endif
	IF_SOCKET ("dontroute",	&opt_so_dontroute)
#ifdef IPV6_DSTOPTS
	IF_IP6    ("dstopts",	&opt_ipv6_dstopts)
#endif
#ifdef VDSUSP	/* HP-UX */
	IF_TERMIOS("dsusp",	&opt_vdsusp)
#endif
#ifdef O_DSYNC
	IF_OPEN   ("dsync",	&opt_o_dsync)
#endif
	IF_TERMIOS("echo",	&opt_echo)
	IF_TERMIOS("echoctl",	&opt_echoctl)
	IF_TERMIOS("echoe",	&opt_echoe)
	IF_TERMIOS("echok",	&opt_echok)
	IF_TERMIOS("echoke",	&opt_echoke)
	IF_TERMIOS("echonl",	&opt_echonl)
#ifdef ECHOPRT
	IF_TERMIOS("echoprt",	&opt_echoprt)
#endif
	IF_OPENSSL("egd",	&opt_openssl_egd)
	IF_ANY    ("end-close",	&opt_end_close)
	IF_TERMIOS("eof",	&opt_veof)
	IF_TERMIOS("eol",	&opt_veol)
	IF_TERMIOS("eol2",	&opt_veol2)
	IF_TERMIOS("erase",	&opt_verase)
	IF_SOCKET ("error",	&opt_so_error)
	IF_ANY    ("escape",	&opt_escape)
	IF_OPEN   ("excl",	&opt_o_excl)
#if WITH_FS && defined(FS_APPEND_FL)
	IF_ANY    ("ext2-append",	&opt_fs_append)
#endif
#if WITH_FS && defined(FS_COMPR_FL)
	IF_ANY    ("ext2-compr",	&opt_fs_compr)
#endif
#if WITH_FS && defined(FS_DIRSYNC_FL)
	IF_ANY    ("ext2-dirsync",	&opt_fs_dirsync)
#endif
#if WITH_FS && defined(FS_IMMUTABLE_FL)
	IF_ANY    ("ext2-immutable",	&opt_fs_immutable)
#endif
#if WITH_FS && defined(FS_JOURNAL_DATA_FL)
	IF_ANY    ("ext2-journal-data",	&opt_fs_journal_data)
#endif
#if WITH_FS && defined(FS_NOATIME_FL)
	IF_ANY    ("ext2-noatime",	&opt_fs_noatime)
#endif
#if WITH_FS && defined(FS_NODUMP_FL)
	IF_ANY    ("ext2-nodump",	&opt_fs_nodump)
#endif
#if WITH_FS && defined(FS_NOTAIL_FL)
	IF_ANY    ("ext2-notail",	&opt_fs_notail)
#endif
#if WITH_FS && defined(FS_SECRM_FL)
	IF_ANY    ("ext2-secrm",	&opt_fs_secrm)
#endif
#if WITH_FS && defined(FS_SYNC_FL)
	IF_ANY    ("ext2-sync",		&opt_fs_sync)
#endif
#if WITH_FS && defined(FS_TOPDIR_FL)
	IF_ANY    ("ext2-topdir",	&opt_fs_topdir)
#endif
#if WITH_FS && defined(FS_UNRM_FL)
	IF_ANY    ("ext2-unrm",		&opt_fs_unrm)
#endif
#if WITH_FS && defined(FS_APPEND_FL)
	IF_ANY    ("ext3-append",	&opt_fs_append)
#endif
#if WITH_FS && defined(FS_COMPR_FL)
	IF_ANY    ("ext3-compr",	&opt_fs_compr)
#endif
#if WITH_FS && defined(FS_DIRSYNC_FL)
	IF_ANY    ("ext3-dirsync",	&opt_fs_dirsync)
#endif
#if WITH_FS && defined(FS_IMMUTABLE_FL)
	IF_ANY    ("ext3-immutable",	&opt_fs_immutable)
#endif
#if WITH_FS && defined(FS_JOURNAL_DATA_FL)
	IF_ANY    ("ext3-journal-data",	&opt_fs_journal_data)
#endif
#if WITH_FS && defined(FS_NOATIME_FL)
	IF_ANY    ("ext3-noatime",	&opt_fs_noatime)
#endif
#if WITH_FS && defined(FS_NODUMP_FL)
	IF_ANY    ("ext3-nodump",	&opt_fs_nodump)
#endif
#if WITH_FS && defined(FS_NOTAIL_FL)
	IF_ANY    ("ext3-notail",	&opt_fs_notail)
#endif
#if WITH_FS && defined(FS_SECRM_FL)
	IF_ANY    ("ext3-secrm",	&opt_fs_secrm)
#endif
#if WITH_FS && defined(FS_SYNC_FL)
	IF_ANY    ("ext3-sync",		&opt_fs_sync)
#endif
#if WITH_FS && defined(FS_TOPDIR_FL)
	IF_ANY    ("ext3-topdir",	&opt_fs_topdir)
#endif
#if WITH_FS && defined(FS_UNRM_FL)
	IF_ANY    ("ext3-unrm",		&opt_fs_unrm)
#endif
	IF_ANY 	  ("f-setlk",	&opt_f_setlk_wr)
	IF_ANY 	  ("f-setlk-rd",	&opt_f_setlk_rd)
	IF_ANY 	  ("f-setlk-wr",	&opt_f_setlk_wr)
	IF_ANY 	  ("f-setlkw",	&opt_f_setlkw_wr)
	IF_ANY 	  ("f-setlkw-rd",	&opt_f_setlkw_rd)
	IF_ANY 	  ("f-setlkw-wr",	&opt_f_setlkw_wr)
#if WITH_PIPE && defined(F_SETPIPE_SZ)
	IF_ANY    ("f-setpipe-sz",	&opt_f_setpipe_sz)
#endif
	IF_EXEC   ("fdin",	&opt_fdin)
	IF_EXEC   ("fdout",	&opt_fdout)
#ifdef FFDLY
#  ifdef FF0
	IF_TERMIOS("ff0",	&opt_ff0)
#  endif
#  ifdef FF1
	IF_TERMIOS("ff1",	&opt_ff1)
#  endif
	IF_TERMIOS("ffdly",	&opt_ffdly)
#endif
#ifdef FIOSETOWN
	IF_SOCKET ("fiosetown",	&opt_fiosetown)
#endif
#if WITH_FIPS
	IF_OPENSSL("fips",	&opt_openssl_fips)
#endif
#if HAVE_FLOCK
	IF_ANY    ("flock",	&opt_flock_ex)
	IF_ANY    ("flock-ex",	&opt_flock_ex)
	IF_ANY    ("flock-ex-nb",	&opt_flock_ex_nb)
	IF_ANY    ("flock-nb",	&opt_flock_ex_nb)
	IF_ANY    ("flock-sh",	&opt_flock_sh)
	IF_ANY    ("flock-sh-nb",	&opt_flock_sh_nb)
#endif
#ifdef IPV4_FLOWINFO
	IF_IP6    ("flowinfo",	&opt_ipv6_flowinfo)
#endif
#ifndef __QNXNTO__
	IF_TERMIOS("flusho",	&opt_flusho)
#endif
	IF_RETRY  ("forever",	&opt_forever)
	IF_LISTEN ("fork",	&opt_fork)
#ifdef IP_FREEBIND
	IF_IP     ("freebind",	&opt_ip_freebind)
#endif
#if WITH_FS && defined(FS_APPEND_FL)
	IF_ANY    ("fs-append",	&opt_fs_append)
#endif
#if WITH_FS && defined(FS_COMPR_FL)
	IF_ANY    ("fs-compr",	&opt_fs_compr)
#endif
#if WITH_FS && defined(FS_DIRSYNC_FL)
	IF_ANY    ("fs-dirsync",	&opt_fs_dirsync)
#endif
#if WITH_FS && defined(FS_IMMUTABLE_FL)
	IF_ANY    ("fs-immutable",	&opt_fs_immutable)
#endif
#if WITH_FS && defined(FS_JOURNAL_DATA_FL)
	IF_ANY    ("fs-journal-data",	&opt_fs_journal_data)
#endif
#if WITH_FS && defined(FS_NOATIME_FL)
	IF_ANY    ("fs-noatime",	&opt_fs_noatime)
#endif
#if WITH_FS && defined(FS_NODUMP_FL)
	IF_ANY    ("fs-nodump",	&opt_fs_nodump)
#endif
#if WITH_FS && defined(FS_NOTAIL_FL)
	IF_ANY    ("fs-notail",	&opt_fs_notail)
#endif
#if WITH_FS && defined(FS_SECRM_FL)
	IF_ANY    ("fs-secrm",	&opt_fs_secrm)
#endif
#if WITH_FS && defined(FS_SYNC_FL)
	IF_ANY    ("fs-sync",		&opt_fs_sync)
#endif
#if WITH_FS && defined(FS_TOPDIR_FL)
	IF_ANY    ("fs-topdir",	&opt_fs_topdir)
#endif
#if WITH_FS && defined(FS_UNRM_FL)
	IF_ANY    ("fs-unrm",		&opt_fs_unrm)
#endif
#if HAVE_FTRUNCATE64
	IF_ANY    ("ftruncate",	&opt_ftruncate64)
#else
	IF_ANY    ("ftruncate",	&opt_ftruncate32)
#endif
	IF_ANY    ("ftruncate32",	&opt_ftruncate32)
#if HAVE_FTRUNCATE64
	IF_ANY    ("ftruncate64",	&opt_ftruncate64)
#endif
	IF_ANY    ("gid",	&opt_group)
	IF_NAMED  ("gid-e",	&opt_group_early)
	IF_ANY    ("gid-l",	&opt_group_late)
	IF_ANY    ("group",	&opt_group)
	IF_NAMED  ("group-early",	&opt_group_early)
	IF_ANY    ("group-late",	&opt_group_late)
#ifdef IP_HDRINCL
	IF_IP     ("hdrincl",	&opt_ip_hdrincl)
#endif
	IF_READLINE("history",	&opt_history_file)
	IF_READLINE("history-file",	&opt_history_file)
#ifdef IPV6_HOPLIMIT
	IF_IP6    ("hoplimit",	&opt_ipv6_hoplimit)
#endif
#ifdef	IPV6_HOPOPTS
	IF_IP6    ("hopopts",	&opt_ipv6_hopopts)
#endif
#if WITH_LIBWRAP && defined(HAVE_HOSTS_ALLOW_TABLE)
	IF_IPAPP  ("hosts-allow",	&opt_tcpwrap_hosts_allow_table)
#endif
#if WITH_LIBWRAP && defined(HAVE_HOSTS_DENY_TABLE)
	IF_IPAPP  ("hosts-deny",	&opt_tcpwrap_hosts_deny_table)
#endif
	IF_PROXY  ("http-version",	&opt_http_version)
	IF_TERMIOS("hup",	&opt_hupcl)
	IF_TERMIOS("hupcl",	&opt_hupcl)
#ifdef I_POP
	IF_ANY    ("i-pop-all",	&opt_streams_i_pop_all)
#endif
#ifdef I_PUSH
	IF_ANY    ("i-push",	&opt_streams_i_push)
#endif
	IF_TERMIOS("icanon",	&opt_icanon)
	IF_TERMIOS("icrnl",	&opt_icrnl)
	IF_TERMIOS("iexten",	&opt_iexten)
#ifdef SO_BINDTODEVICE
	IF_SOCKET ("if",	&opt_so_bindtodevice)
#endif
	IF_INTERFACE("iff-allmulti",	&opt_iff_allmulti)
#ifdef IFF_AUTOMEDIA
	IF_INTERFACE("iff-automedia",	&opt_iff_automedia)
#endif
	IF_INTERFACE("iff-broadcast",	&opt_iff_broadcast)
	IF_INTERFACE("iff-debug",	&opt_iff_debug)
	/*IF_INTERFACE("iff-dynamic",	&opt_iff_dynamic)*/
	IF_INTERFACE("iff-loopback",	&opt_iff_loopback)
#ifdef IFF_MASTER
	IF_INTERFACE("iff-master",	&opt_iff_master)
#endif
	IF_INTERFACE("iff-multicast",	&opt_iff_multicast)
	IF_TUN    ("iff-no-pi",	&opt_iff_no_pi)
	IF_INTERFACE("iff-noarp",	&opt_iff_noarp)
	IF_INTERFACE("iff-notrailers",	&opt_iff_notrailers)
	IF_INTERFACE("iff-pointopoint",	&opt_iff_pointopoint)
#ifdef IFF_PORTSEL
	IF_INTERFACE("iff-portsel",	&opt_iff_portsel)
#endif
	IF_INTERFACE("iff-promisc",	&opt_iff_promisc)
	IF_INTERFACE("iff-running",	&opt_iff_running)
#ifdef IFF_SLAVE
	IF_INTERFACE("iff-slave",	&opt_iff_slave)
#endif
	IF_INTERFACE("iff-up",	&opt_iff_up)
	IF_TERMIOS("ignbrk",	&opt_ignbrk)
	IF_TERMIOS("igncr",	&opt_igncr)
  /* you might need to terminate socat manually if you use this option: */
	IF_PROXY  ("ignorecr",	&opt_ignorecr)
	IF_ANY    ("ignoreeof",	&opt_ignoreeof)
	IF_ANY    ("ignoreof",	&opt_ignoreeof)
	IF_TERMIOS("ignpar",	&opt_ignpar)
#if HAVE_RESOLV_H
	IF_RESOLVE("igntc",		&opt_res_igntc)
#endif /* HAVE_RESOLV_H */
	IF_TERMIOS("imaxbel",	&opt_imaxbel)
#if WITH_FS && defined(FS_IMMUTABLE_FL)
	IF_ANY    ("immutable",	&opt_fs_immutable)
#endif
#ifdef TCP_INFO	/* Linux 2.4.0 */
	IF_TCP    ("info",	&opt_tcp_info)
#endif
	IF_TERMIOS("inlcr",	&opt_inlcr)
	IF_TERMIOS("inpck",	&opt_inpck)
#ifdef SO_BINDTODEVICE
	IF_SOCKET ("interface",	&opt_so_bindtodevice)
#endif
	IF_RETRY  ("interval",	&opt_intervall)
	IF_RETRY  ("intervall",	&opt_intervall)
	IF_TERMIOS("intr",	&opt_vintr)
	IF_ANY    ("ioctl",	&opt_ioctl_void)
	IF_ANY    ("ioctl-bin",	&opt_ioctl_bin)
	IF_ANY    ("ioctl-int",	&opt_ioctl_int)
	IF_ANY    ("ioctl-intp",	&opt_ioctl_intp)
	IF_ANY    ("ioctl-string",	&opt_ioctl_string)
	IF_ANY    ("ioctl-void",	&opt_ioctl_void)
#ifdef IP_ADD_MEMBERSHIP
	IF_IP     ("ip-add-membership",	&opt_ip_add_membership)
#endif
#if defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP)
	IF_IP     ("ip-add-source-membership",	&opt_ip_add_source_membership)
#endif
#ifdef IP_FREEBIND
	IF_IP     ("ip-freebind",	&opt_ip_freebind)
#endif
#ifdef IP_HDRINCL
	IF_IP     ("ip-hdrincl",	&opt_ip_hdrincl)
#endif
#ifdef IP_ADD_MEMBERSHIP
	IF_IP     ("ip-membership",	&opt_ip_add_membership)
#endif
#ifdef IP_MTU
	IF_IP     ("ip-mtu",	&opt_ip_mtu)
#endif
#ifdef IP_MTU_DISCOVER
	IF_IP     ("ip-mtu-discover",	&opt_ip_mtu_discover)
#endif
	IF_IP     ("ip-multicast-if",	&opt_ip_multicast_if)
	IF_IP     ("ip-multicast-loop",	&opt_ip_multicast_loop)
	IF_IP     ("ip-multicast-ttl",	&opt_ip_multicast_ttl)
#ifdef IP_OPTIONS
	IF_IP     ("ip-options",	&opt_ip_options)
#endif
#ifdef IP_PKTINFO
	IF_IP     ("ip-pktinfo",	&opt_ip_pktinfo)
#endif
#ifdef IP_PKTOPTIONS
	IF_IP     ("ip-pktoptions",	&opt_ip_pktoptions)
#endif
#ifdef IP_RECVDSTADDR
	IF_IP     ("ip-recvdstaddr",	&opt_ip_recvdstaddr)
#endif
#ifdef IP_RECVERR
	IF_IP     ("ip-recverr",	&opt_ip_recverr)
#endif
#ifdef IP_RECVIF
	IF_IP     ("ip-recvif",		&opt_ip_recvif)
#endif
#ifdef IP_RECVOPTS
	IF_IP     ("ip-recvopts",	&opt_ip_recvopts)
#endif
#ifdef IP_RECVTOS
	IF_IP     ("ip-recvtos",	&opt_ip_recvtos)
#endif
#ifdef IP_RECVTTL
	IF_IP     ("ip-recvttl",	&opt_ip_recvttl)
#endif
#ifdef IP_RETOPTS
	IF_IP     ("ip-retopts",	&opt_ip_retopts)
#endif
#ifdef IP_ROUTER_ALERT
	IF_IP     ("ip-router-alert",	&opt_ip_router_alert)
#endif
	IF_IP     ("ip-tos",	&opt_ip_tos)
#ifdef IP_TRANSPARENT
	IF_IP     ("ip-transparent",    &opt_ip_transparent)
#endif
	IF_IP     ("ip-ttl",	&opt_ip_ttl)
#ifdef IP_FREEBIND
	IF_IP     ("ipfreebind",	&opt_ip_freebind)
#endif
#ifdef IP_HDRINCL
	IF_IP     ("iphdrincl",	&opt_ip_hdrincl)
#endif
#ifdef IP_MTU
	IF_IP     ("ipmtu",	&opt_ip_mtu)
#endif
#ifdef IP_MTU_DISCOVER
	IF_IP     ("ipmtudiscover",	&opt_ip_mtu_discover)
#endif
	IF_IP     ("ipmulticastloop",	&opt_ip_multicast_loop)
	IF_IP     ("ipmulticastttl",	&opt_ip_multicast_ttl)
#ifdef IP_OPTIONS
	IF_IP     ("ipoptions",	&opt_ip_options)
#endif
#ifdef IP_PKTINFO
	IF_IP     ("ippktinfo",	&opt_ip_pktinfo)
#endif
#ifdef IP_PKTOPTIONS
	IF_IP     ("ippktoptions",	&opt_ip_pktoptions)
#endif
#ifdef IP_RECVDSTADDR
	IF_IP     ("iprecvdstaddr",	&opt_ip_recvdstaddr)
#endif
#ifdef IP_RECVERR
	IF_IP     ("iprecverr",	&opt_ip_recverr)
#endif
#ifdef IP_RECVOPTS
	IF_IP     ("iprecvopts",	&opt_ip_recvopts)
#endif
#ifdef IP_RECVTOS
	IF_IP     ("iprecvtos",	&opt_ip_recvtos)
#endif
#ifdef IP_RECVTTL
	IF_IP     ("iprecvttl",	&opt_ip_recvttl)
#endif
#ifdef IP_RETOPTS
	IF_IP     ("ipretopts",	&opt_ip_retopts)
#endif
#ifdef IP_ROUTER_ALERT
	IF_IP     ("iprouteralert",	&opt_ip_router_alert)
#endif
	IF_IP     ("iptos",	&opt_ip_tos)
	IF_IP     ("ipttl",	&opt_ip_ttl)
#ifdef IPV6_JOIN_GROUP
	IF_IP6    ("ipv6-add-membership",	&opt_ipv6_join_group)
#endif
#ifdef MCAST_JOIN_SOURCE_GROUP
	IF_IP6    ("ipv6-add-source-membership",	&opt_ipv6_join_source_group)
#endif
#ifdef IPV6_AUTHHDR
	IF_IP6    ("ipv6-authhdr",	&opt_ipv6_authhdr)
#endif
#ifdef IPV6_DSTOPTS
	IF_IP6    ("ipv6-dstopts",	&opt_ipv6_dstopts)
#endif
#ifdef IPV4_FLOWINFO
	IF_IP6    ("ipv6-flowinfo",	&opt_ipv6_flowinfo)
#endif
#ifdef IPV6_HOPLIMIT
	IF_IP6    ("ipv6-hoplimit",	&opt_ipv6_hoplimit)
#endif
#ifdef IPV6_HOPOPTS
	IF_IP6    ("ipv6-hopopts",	&opt_ipv6_hopopts)
#endif
#ifdef IPV6_JOIN_GROUP
	IF_IP6    ("ipv6-join-group",	&opt_ipv6_join_group)
#endif
#ifdef MCAST_JOIN_SOURCE_GROUP
	IF_IP6    ("ipv6-join-source-group",	&opt_ipv6_join_source_group)
#endif
#ifdef IPV6_PKTINFO
	IF_IP6    ("ipv6-pktinfo",	&opt_ipv6_pktinfo)
#endif
#ifdef IPV6_RECVDSTOPTS
	IF_IP6    ("ipv6-recvdstopts",	&opt_ipv6_recvdstopts)
#endif
#ifdef IPV6_RECVERR
	IF_IP6    ("ipv6-recverr",	&opt_ipv6_recverr)
#endif
#ifdef IPV6_RECVHOPLIMIT
	IF_IP6    ("ipv6-recvhoplimit",	&opt_ipv6_recvhoplimit)
#endif
#ifdef IPV6_RECVHOPOPTS
	IF_IP6    ("ipv6-recvhopopts",	&opt_ipv6_recvhopopts)
#endif
#ifdef IPV6_PATHMTU
	IF_IP6    ("ipv6-recvpathmtu",	&opt_ipv6_recvpathmtu)
#endif
#ifdef IPV6_RECVPKTINFO
	IF_IP6    ("ipv6-recvpktinfo",	&opt_ipv6_recvpktinfo)
#endif
#ifdef IPV6_RECVRTHDR
	IF_IP6    ("ipv6-recvrthdr",	&opt_ipv6_recvrthdr)
#endif
#ifdef IPV6_RECVTCLASS
	IF_IP6    ("ipv6-recvtclass",	&opt_ipv6_recvtclass)
#endif
#ifdef IPV6_RTHDR
	IF_IP6    ("ipv6-rthdr",	&opt_ipv6_rthdr)
#endif
#ifdef IPV6_TCLASS
	IF_IP6    ("ipv6-tclass",	&opt_ipv6_tclass)
#endif
	IF_IP6    ("ipv6-unicast-hops",	&opt_ipv6_unicast_hops)
#ifdef IPV6_V6ONLY
	IF_IP6    ("ipv6-v6only",	&opt_ipv6_v6only)
	IF_IP6    ("ipv6only",	&opt_ipv6_v6only)
#endif
	IF_TERMIOS("isig",	&opt_isig)
#if HAVE_TERMIOS_ISPEED
	IF_TERMIOS("ispeed",	&opt_ispeed)
#endif
	IF_TERMIOS("istrip",	&opt_istrip)
#ifdef IUCLC
	IF_TERMIOS("iuclc",	&opt_iuclc)
#endif
	IF_TERMIOS("ixany",	&opt_ixany)
	IF_TERMIOS("ixoff",	&opt_ixoff)
	IF_TERMIOS("ixon",	&opt_ixon)
#ifdef IPV6_JOIN_GROUP
	IF_IP6    ("join-group",	&opt_ipv6_join_group)
#endif
#ifdef MCAST_JOIN_SOURCE_GROUP
	IF_IP6    ("join-source-group",	&opt_ipv6_join_source_group)
#endif
#if WITH_FS && defined(FS_JOURNAL_DATA_FL)
	IF_ANY    ("journal",		&opt_fs_journal_data)
	IF_ANY    ("journal-data",	&opt_fs_journal_data)
#endif
	IF_SOCKET ("keepalive",	&opt_so_keepalive)
#ifdef TCP_KEEPCNT	/* Linux 2.4.0 */
	IF_TCP    ("keepcnt",	&opt_tcp_keepcnt)
#endif
#ifdef TCP_KEEPIDLE	/* Linux 2.4.0 */
	IF_TCP    ("keepidle",	&opt_tcp_keepidle)
#endif
#ifdef TCP_KEEPINIT	/* OSF1 */
	IF_TCP    ("keepinit",	&opt_tcp_keepinit)
#endif
#ifdef TCP_KEEPINTVL	/* Linux 2.4.0 */
	IF_TCP    ("keepintvl",	&opt_tcp_keepintvl)
#endif
#ifdef SO_KERNACCEPT	/* AIX 4.3.3 */
	IF_SOCKET ("kernaccept",	&opt_so_kernaccept)
#endif /* SO_KERNACCEPT */
	IF_OPENSSL("key",	&opt_openssl_key)
	IF_TERMIOS("kill",	&opt_vkill)
#ifdef O_LARGEFILE
	IF_OPEN   ("largefile",	&opt_o_largefile)
#endif
#if WITH_LIBWRAP
	IF_IPAPP  ("libwrap",		&opt_tcpwrappers)
#endif
	IF_SOCKET ("linger",	&opt_so_linger)
#ifdef TCP_LINGER2	/* Linux 2.4.0 */
	IF_TCP    ("linger2",	&opt_tcp_linger2)
#endif
	IF_PTY    ("link",	&opt_symbolic_link)
	IF_LISTEN ("listen-timeout",	&opt_accept_timeout)
	IF_TERMIOS("lnext",	&opt_vlnext)
#if defined(F_SETLKW)
	IF_ANY    ("lock",	&opt_f_setlkw_wr)	/* POSIX, first choice */
#elif defined(HAVE_FLOCK)
	IF_ANY    ("lock",	&opt_flock_ex)	/* BSD, fallback */
#endif
	IF_ANY    ("lockfile",	&opt_lockfile)
#if defined(F_SETLKW)
	IF_ANY    ("lockw",	&opt_f_setlkw_wr)	/* POSIX, first choice */
#elif defined(HAVE_FLOCK)
	IF_ANY    ("lockw",	&opt_flock_ex_nb)	/* BSD, fallback */
#endif
	IF_EXEC   ("login",	&opt_dash)
	IF_INTERFACE("loopback",	&opt_iff_loopback)
	IF_IPAPP  ("lowport",	&opt_lowport)
#if HAVE_LSEEK64
	IF_ANY    ("lseek",	&opt_lseek64_set)
#else
	IF_ANY    ("lseek",	&opt_lseek32_set)
#endif
	IF_ANY    ("lseek32",		&opt_lseek32_set)
	IF_ANY    ("lseek32-cur",	&opt_lseek32_cur)
	IF_ANY    ("lseek32-end",	&opt_lseek32_end)
	IF_ANY    ("lseek32-set",	&opt_lseek32_set)
#if HAVE_LSEEK64
	IF_ANY    ("lseek64",		&opt_lseek64_set)
	IF_ANY    ("lseek64-cur",	&opt_lseek64_cur)
	IF_ANY    ("lseek64-end",	&opt_lseek64_end)
	IF_ANY    ("lseek64-set",	&opt_lseek64_set)
#endif
#ifdef IFF_MASTER
	IF_INTERFACE("master",	&opt_iff_master)
#endif
	IF_LISTEN ("max-children",	&opt_max_children)
#if HAVE_SSL_set_max_proto_version || defined(SSL_set_max_proto_version)
	IF_OPENSSL("max-version",	&opt_openssl_max_proto_version)
#endif
	IF_LISTEN ("maxchildren",	&opt_max_children)
#if HAVE_SSL_CTX_set_tlsext_max_fragment_length || defined(SSL_CTX_set_tlsext_max_fragment_length)
	IF_OPENSSL("maxfraglen",	&opt_openssl_maxfraglen)
#endif
#ifdef TCP_MAXSEG
	IF_TCP    ("maxseg",	&opt_tcp_maxseg)
	IF_TCP    ("maxseg-late",	&opt_tcp_maxseg_late)
#endif
#if HAVE_SSL_CTX_set_max_send_fragment || defined(SSL_CTX_set_max_send_fragment)
	IF_OPENSSL("maxsendfrag",	&opt_openssl_maxsendfrag)
#endif
#ifdef TCP_MD5SUM
	IF_TCP    ("md5sig",	&opt_tcp_md5sig)
#endif
#ifdef IP_ADD_MEMBERSHIP
	IF_IP     ("membership",	&opt_ip_add_membership)
#endif
#if WITH_OPENSSL_METHOD
	IF_OPENSSL("method",	&opt_openssl_method)
#endif
	IF_TERMIOS("min",	&opt_vmin)
#if HAVE_SSL_set_min_proto_version || defined(SSL_set_min_proto_version)
	IF_OPENSSL("min-version",	&opt_openssl_min_proto_version)
#endif
	IF_ANY    ("mode",	&opt_perm)
#if WITH_POSIXMQ
	IF_ANY	  ("mq-prio",	&opt_posixmq_priority)
#endif
#ifdef TCP_MAXSEG
	IF_TCP    ("mss",	&opt_tcp_maxseg)
	IF_TCP    ("mss-late",	&opt_tcp_maxseg_late)
#endif
#ifdef IP_MTU
	IF_IP     ("mtu",	&opt_ip_mtu)
#endif
#ifdef IP_MTU_DISCOVER
	IF_IP     ("mtudiscover",	&opt_ip_mtu_discover)
#endif
	IF_INTERFACE("multicast",	&opt_iff_multicast)
	IF_IP     ("multicast-if",	&opt_ip_multicast_if)
	IF_IP     ("multicast-loop",	&opt_ip_multicast_loop)
	IF_IP     ("multicast-ttl",	&opt_ip_multicast_ttl)
	IF_IP     ("multicastloop",	&opt_ip_multicast_loop)
	IF_IP     ("multicastttl",	&opt_ip_multicast_ttl)
#if WITH_RESOLVE && HAVE_RESOLV_H && HAVE_RES_NSADDR_LIST
	IF_IP     ("nameserver",	&opt_res_nsaddr)
#endif
#if defined(O_NDELAY) && (!defined(O_NONBLOCK) || O_NDELAY != O_NONBLOCK)
	IF_ANY    ("ndelay",	&opt_o_ndelay)
#else
	IF_ANY    ("ndelay",	&opt_nonblock)
#endif
#if WITH_NAMESPACES
	IF_ANY    ("netns",	&opt_set_netns)
#endif
	IF_NAMED  ("new",	&opt_unlink_early)
#ifdef NLDLY
#  ifdef NL0
	IF_TERMIOS("nl0",	&opt_nl0)
#  endif
#  ifdef NL1
	IF_TERMIOS("nl1",	&opt_nl1)
#  endif
	IF_TERMIOS("nldly",	&opt_nldly)
#endif /* defined(NLDLY) */
#ifdef SO_NO_CHECK
	IF_SOCKET ("no-check",	&opt_so_no_check)
#endif
	IF_TUN    ("no-pi",	&opt_iff_no_pi)
#if defined(HAVE_SSL_set_tlsext_host_name) || defined(SSL_set_tlsext_host_name)
	IF_OPENSSL("no-sni",	&opt_openssl_no_sni)
#endif
	IF_INTERFACE("noarp",	&opt_iff_noarp)
#ifdef O_NOATIME
	IF_OPEN   ("noatime",	&opt_o_noatime)
#endif
#ifdef SO_NO_CHECK
	IF_SOCKET ("nocheck",	&opt_so_no_check)
#endif
	IF_OPEN   ("noctty",	&opt_o_noctty)
#ifdef TCP_NODELAY
	IF_TCP    ("nodelay",	&opt_tcp_nodelay)
#endif
#if WITH_FS && defined(FS_NODUMP_FL)
	IF_ANY    ("nodump",	&opt_fs_nodump)
#endif
#if HAVE_REGEX_H
	IF_READLINE("noecho",	&opt_noecho)
#endif /* HAVE_REGEX_H */
	IF_TERMIOS("noflsh",	&opt_noflsh)
#ifdef O_NOFOLLOW
	IF_OPEN   ("nofollow",	&opt_o_nofollow)
#endif
	IF_EXEC   ("nofork",	&opt_nofork)
#ifdef O_NOINHERIT
	IF_ANY    ("noinherit",		&opt_o_noinherit)
#endif
	IF_ANY    ("nonblock",	&opt_nonblock)
#ifdef TCP_NOOPT
	IF_TCP    ("noopt",		&opt_tcp_noopt)
#endif
	IF_READLINE("noprompt",	&opt_noprompt)
#ifdef TCP_NOPUSH
	IF_TCP    ("nopush",	&opt_tcp_nopush)
#endif
#ifdef SO_NOREUSEADDR	/* AIX 4.3.3 */
	IF_SOCKET ("noreuseaddr",	&opt_so_noreuseaddr)
#endif /* SO_NOREUSEADDR */
#if defined(HAVE_SSL_set_tlsext_host_name) || defined(SSL_set_tlsext_host_name)
	IF_OPENSSL("nosni",		&opt_openssl_no_sni)
#endif
	IF_INTERFACE("notrailers",	&opt_iff_notrailers)
#if WITH_RESOLVE && HAVE_RESOLV_H && HAVE_RES_NSADDR_LIST
	IF_IP     ("nsaddr",		&opt_res_nsaddr)
#endif
#ifdef O_NSHARE
	IF_OPEN   ("nshare",	&opt_o_nshare)
#endif
	IF_SOCKET ("null-eof",		&opt_null_eof)
	IF_ANY    ("o-append",		&opt_append)
#ifdef O_ASYNC
	IF_ANY    ("o-async",		&opt_async)
#endif
#ifdef O_BINARY
	IF_OPEN   ("o-binary",		&opt_o_binary)
#endif
	IF_OPEN   ("o-creat",	&opt_o_create)
	IF_OPEN   ("o-create",	&opt_o_create)
#ifdef O_DEFER
	IF_OPEN   ("o-defer",	&opt_o_defer)
#endif
#ifdef O_DELAY
	IF_OPEN   ("o-delay",	&opt_o_delay)
#endif
#ifdef O_DIRECT
	IF_OPEN   ("o-direct",	&opt_o_direct)
#endif
#ifdef O_DIRECTORY
	IF_OPEN   ("o-directory",	&opt_o_directory)
#endif
#ifdef O_DSYNC
	IF_OPEN   ("o-dsync",	&opt_o_dsync)
#endif
	IF_OPEN   ("o-excl",	&opt_o_excl)
#ifdef O_LARGEFILE
	IF_OPEN   ("o-largefile",	&opt_o_largefile)
#endif
#if defined(O_NDELAY) && (!defined(O_NONBLOCK) || O_NDELAY != O_NONBLOCK)
	IF_ANY    ("o-ndelay",	&opt_o_ndelay)
#else
	IF_ANY    ("o-ndelay",	&opt_nonblock)
#endif
#ifdef O_NOATIME
	IF_OPEN   ("o-noatime",	&opt_o_noatime)
#endif
	IF_OPEN   ("o-noctty",	&opt_o_noctty)
#ifdef O_NOFOLLOW
	IF_OPEN   ("o-nofollow",	&opt_o_nofollow)
#endif
#ifdef O_NOINHERIT
	IF_ANY    ("o-noinherit",	&opt_o_noinherit)
#endif
	IF_ANY    ("o-nonblock",	&opt_nonblock)
#ifdef O_NSHARE
	IF_OPEN   ("o-nshare",	&opt_o_nshare)
#endif
#ifdef O_PRIV
	IF_OPEN   ("o-priv",	&opt_o_priv)
#endif
	IF_OPEN   ("o-rdonly",	&opt_o_rdonly)
	IF_OPEN   ("o-rdwr",	&opt_o_rdwr)
#ifdef O_RSHARE
	IF_OPEN   ("o-rshare",	&opt_o_rshare)
#endif
#ifdef O_RSYNC
	IF_OPEN   ("o-rsync",	&opt_o_rsync)
#endif
#ifdef O_SYNC
	IF_OPEN   ("o-sync",	&opt_o_sync)
#endif
#ifdef O_TEXT
	IF_ANY    ("o-text",		&opt_o_text)
#endif
	IF_OPEN   ("o-trunc",	&opt_o_trunc)
	IF_OPEN   ("o-wronly",	&opt_o_wronly)
	IF_OPEN   ("o_create",	&opt_o_create)
#ifdef O_DEFER
	IF_OPEN   ("o_defer",	&opt_o_defer)
#endif
#ifdef O_DELAY
	IF_OPEN   ("o_delay",	&opt_o_delay)
#endif
#ifdef O_DIRECT
	IF_OPEN   ("o_direct",	&opt_o_direct)
#endif
#ifdef O_DIRECTORY
	IF_OPEN   ("o_directory",	&opt_o_directory)
#endif
#ifdef O_DSYNC
	IF_OPEN   ("o_dsync",	&opt_o_dsync)
#endif
	IF_OPEN   ("o_excl",	&opt_o_excl)
#ifdef O_LARGEFILE
	IF_OPEN   ("o_largefile",	&opt_o_largefile)
#endif
#if defined(O_NDELAY) && (!defined(O_NONBLOCK) || O_NDELAY != O_NONBLOCK)
	IF_ANY    ("o_ndelay",	&opt_o_ndelay)
#else
	IF_ANY    ("o_ndelay",	&opt_nonblock)
#endif
	IF_OPEN   ("o_noctty",	&opt_o_noctty)
#ifdef O_NOFOLLOW
	IF_OPEN   ("o_nofollow",	&opt_o_nofollow)
#endif
#ifdef O_NSHARE
	IF_OPEN   ("o_nshare",	&opt_o_nshare)
#endif
#ifdef O_PRIV
	IF_OPEN   ("o_priv",	&opt_o_priv)
#endif
	IF_OPEN   ("o_rdonly",	&opt_o_rdonly)
	IF_OPEN   ("o_rdwr",	&opt_o_rdwr)
#ifdef O_RSHARE
	IF_OPEN   ("o_rshare",	&opt_o_rshare)
#endif
#ifdef O_RSYNC
	IF_OPEN   ("o_rsync",	&opt_o_rsync)
#endif
#ifdef O_SYNC
	IF_OPEN   ("o_sync",	&opt_o_sync)
#endif
	IF_OPEN   ("o_wronly",	&opt_o_wronly)
#ifdef OCRNL
	IF_TERMIOS("ocrnl",	&opt_ocrnl)
#endif
#ifdef OFDEL
	IF_TERMIOS("ofdel",	&opt_ofdel)
#endif
#ifdef OFILL
	IF_TERMIOS("ofill",	&opt_ofill)
#endif
#ifdef OLCUC
	IF_TERMIOS("olcuc",	&opt_olcuc)
#endif
	IF_TERMIOS("onlcr",	&opt_onlcr)
#ifdef ONLRET
	IF_TERMIOS("onlret",	&opt_onlret)
#endif
#ifdef ONOCR
	IF_TERMIOS("onocr",	&opt_onocr)
#endif
	IF_SOCKET ("oobinline",	&opt_so_oobinline)
#if HAVE_OPENPTY
	IF_EXEC   ("openpty",	&opt_openpty)
#endif /* HAVE_OPENPTY */
	IF_OPENSSL("openssl-cafile",	&opt_openssl_cafile)
	IF_OPENSSL("openssl-capath",	&opt_openssl_capath)
	IF_OPENSSL("openssl-certificate",	&opt_openssl_certificate)
	IF_OPENSSL("openssl-cipherlist",	&opt_openssl_cipherlist)
	IF_OPENSSL("openssl-commonname",	&opt_openssl_commonname)
#if OPENSSL_VERSION_NUMBER >= 0x00908000L && !defined(OPENSSL_NO_COMP)
	IF_OPENSSL("openssl-compress",	&opt_openssl_compress)
#endif
	IF_OPENSSL("openssl-dhparam",	&opt_openssl_dhparam)
	IF_OPENSSL("openssl-dhparams",	&opt_openssl_dhparam)
	IF_OPENSSL("openssl-egd",	&opt_openssl_egd)
#if WITH_FIPS
	IF_OPENSSL("openssl-fips",	&opt_openssl_fips)
#endif
	IF_OPENSSL("openssl-key",	&opt_openssl_key)
#if HAVE_SSL_set_max_proto_version || defined(SSL_set_max_proto_version)
	IF_OPENSSL("openssl-max-proto-version",	&opt_openssl_max_proto_version)
#endif
#if HAVE_SSL_CTX_set_tlsext_max_fragment_length || defined(SSL_CTX_set_tlsext_max_fragment_length)
	IF_OPENSSL("openssl-maxfraglen",	&opt_openssl_maxfraglen)
#endif
#if HAVE_SSL_CTX_set_max_send_fragment || defined(SSL_CTX_set_max_send_fragment)
	IF_OPENSSL("openssl-maxsendfrag",	&opt_openssl_maxsendfrag)
#endif
#if WITH_OPENSSL_METHOD
	IF_OPENSSL("openssl-method",	&opt_openssl_method)
#endif
#if HAVE_SSL_set_min_proto_version || defined(SSL_set_min_proto_version)
	IF_OPENSSL("openssl-min-proto-version",	&opt_openssl_min_proto_version)
#endif
#if defined(HAVE_SSL_set_tlsext_host_name) || defined(SSL_set_tlsext_host_name)
	IF_OPENSSL("openssl-no-sni",	&opt_openssl_no_sni)
#endif
	IF_OPENSSL("openssl-pseudo",	&opt_openssl_pseudo)
#if defined(HAVE_SSL_set_tlsext_host_name) || defined(SSL_set_tlsext_host_name)
	IF_OPENSSL("openssl-snihost",   &opt_openssl_snihost)
#endif
	IF_OPENSSL("openssl-verify",	&opt_openssl_verify)
	IF_TERMIOS("opost",	&opt_opost)
#if HAVE_TERMIOS_OSPEED
	IF_TERMIOS("ospeed",	&opt_ospeed)
#endif
	IF_ANY    ("owner",	&opt_user)
	IF_TERMIOS("parenb",	&opt_parenb)
	IF_TERMIOS("parmrk",	&opt_parmrk)
	IF_TERMIOS("parodd",	&opt_parodd)
#ifdef SO_PASSCRED
	IF_SOCKET ("passcred",	&opt_so_passcred)
#endif
#if defined(AI_PASSIVE	)
	IF_IP	  ("passive", 			&opt_ai_passive)
#endif
	IF_EXEC   ("path",	&opt_path)
#ifdef TCP_PAWS	/* OSF1 */
	IF_TCP    ("paws",	&opt_tcp_paws)
#endif
#ifdef SO_PEERCRED
	IF_SOCKET ("peercred",	&opt_so_peercred)
#endif
#ifdef PENDIN
	IF_TERMIOS("pendin",	&opt_pendin)
#endif
	IF_ANY    ("perm",	&opt_perm)
	IF_NAMED  ("perm-early",	&opt_perm_early)
	IF_ANY    ("perm-late",	&opt_perm_late)
	IF_SOCKET ("pf",	&opt_protocol_family)
	IF_EXEC   ("pgid",	&opt_setpgid)
	IF_EXEC   ("pipes",	&opt_pipes)
#if WITH_PIPE && defined(F_SETPIPE_SZ)
	IF_ANY    ("pipesz",	&opt_f_setpipe_sz)
#endif
#ifdef IP_PKTINFO
	IF_IP     ("pktinfo",	&opt_ip_pktinfo)
#endif
#ifdef IP_PKTOPTIONS
	IF_IP     ("pktoptions",	&opt_ip_pktoptions)
	IF_IP     ("pktopts",	&opt_ip_pktoptions)
#endif
	IF_INTERFACE("pointopoint",	&opt_iff_pointopoint)
#ifdef I_POP
	IF_ANY    ("pop-all",	&opt_streams_i_pop_all)
#endif
	/*IF_IPAPP("port",	&opt_port)*/
#ifdef IFF_PORTSEL
	IF_INTERFACE("portsel",	&opt_iff_portsel)
#endif
#if WITH_POSIXMQ
	IF_ANY	  ("posixmq-priority",	&opt_posixmq_priority)
#endif
#if HAVE_RESOLV_H && WITH_RES_PRIMARY
	IF_RESOLVE("primary",		&opt_res_primary)
#endif
#ifdef SO_PRIORITY
	IF_SOCKET ("priority",	&opt_so_priority)
#endif
#ifdef O_PRIV
	IF_OPEN   ("priv",	&opt_o_priv)
#endif
	IF_INTERFACE("promisc",	&opt_iff_promisc)
	IF_READLINE("prompt",	&opt_prompt)
#ifdef SO_PROTOTYPE
	IF_SOCKET ("protocol",	&opt_so_prototype)
#endif
	IF_SOCKET ("protocol-family",	&opt_protocol_family)
#ifdef SO_PROTOTYPE
	IF_SOCKET ("prototype",	&opt_so_prototype)
#endif
	IF_PROXY  ("proxy-auth",	&opt_proxy_authorization)
	IF_PROXY  ("proxy-authorization",	&opt_proxy_authorization)
	IF_PROXY  ("proxy-authorization-file",	&opt_proxy_authorization_file)
	IF_PROXY  ("proxy-resolve",	&opt_proxy_resolve)
	IF_PROXY  ("proxyauth",	&opt_proxy_authorization)
	IF_PROXY  ("proxyauthfile",	&opt_proxy_authorization_file)
	IF_PROXY  ("proxyport",	&opt_proxyport)
#ifdef ECHOPRT
	IF_TERMIOS("prterase",	&opt_echoprt)
#endif
	IF_OPENSSL("pseudo",	&opt_openssl_pseudo)
#if HAVE_DEV_PTMX || HAVE_DEV_PTC
	IF_EXEC   ("ptmx",	&opt_ptmx)
#endif
#if HAVE_PTY
	IF_EXEC   ("pty",	&opt_pty)
#endif
#if HAVE_PTY && HAVE_POLL
	IF_PTY    ("pty-interval",	&opt_pty_intervall)
	IF_PTY    ("pty-intervall",	&opt_pty_intervall)
	IF_PTY    ("pty-wait-slave",	&opt_pty_wait_slave)
#endif /* HAVE_PTY && HAVE_POLL */
#ifdef I_PUSH
	IF_ANY    ("push",	&opt_streams_i_push)
#endif
#ifdef TCP_QUICKACK
	IF_TCP    ("quickack",	&opt_tcp_quickack)
#endif
	IF_TERMIOS("quit",	&opt_vquit)
	IF_RANGE  ("range",	&opt_range)
	IF_TERMIOS("raw",	&opt_raw)
	IF_TERMIOS("rawer",	&opt_termios_rawer)
	IF_SOCKET ("rcvbuf",	&opt_so_rcvbuf)
	IF_SOCKET ("rcvbuf-late",	&opt_so_rcvbuf_late)
#ifdef SO_RCVLOWAT
	IF_SOCKET ("rcvlowat",	&opt_so_rcvlowat)
#endif
#ifdef SO_RCVTIMEO
	IF_SOCKET ("rcvtimeo",		&opt_so_rcvtimeo)
#endif
	IF_OPEN   ("rdonly",	&opt_o_rdonly)
	IF_OPEN   ("rdwr",	&opt_o_rdwr)
	IF_ANY    ("readbytes", &opt_readbytes)
#if HAVE_RESOLV_H
	IF_RESOLVE("recurse",		&opt_res_recurse)
#endif /* HAVE_RESOLV_H */
#ifdef IP_RECVDSTADDR
	IF_IP     ("recvdstaddr",	&opt_ip_recvdstaddr)
#endif
#ifdef IPV6_RECVDSTOPTS
	IF_IP6    ("recvdstopts",	&opt_ipv6_recvdstopts)
#endif
#ifdef IP_RECVERR
	IF_IP     ("recverr",	&opt_ip_recverr)
#endif
#ifdef IPV6_RECVHOPLIMIT
	IF_IP6    ("recvhoplimit",	&opt_ipv6_recvhoplimit)
#endif
#ifdef IPV6_RECVHOPOPTS
	IF_IP6    ("recvhopopts",	&opt_ipv6_recvhopopts)
#endif
#ifdef IP_RECVIF
	IF_IP     ("recvif",		&opt_ip_recvif)
#endif
#ifdef IP_RECVOPTS
	IF_IP     ("recvopts",	&opt_ip_recvopts)
#endif
#ifdef IPV6_RECVPKTINFO
	IF_IP6    ("recvpktinfo",	&opt_ipv6_recvpktinfo)
#endif
#ifdef IPV6_RECVRTHDR
	IF_IP6    ("recvrthdr",	&opt_ipv6_recvrthdr)
#endif
#ifdef IP_RECVTOS
	IF_IP     ("recvtos",	&opt_ip_recvtos)
#endif
#ifdef IP_RECVTTL
	IF_IP     ("recvttl",	&opt_ip_recvttl)
#endif
	IF_NAMED  ("remove",	&opt_unlink)
#ifdef VREPRINT
	IF_TERMIOS("reprint",	&opt_vreprint)
#endif
#if HAVE_RESOLV_H
#  if WITH_AA_ONLY
	IF_RESOLVE("res-aaonly",	&opt_res_aaonly)
#  endif
	IF_RESOLVE("res-debug",		&opt_res_debug)
	IF_RESOLVE("res-defnames",	&opt_res_defnames)
	IF_RESOLVE("res-dnsrch",	&opt_res_dnsrch)
	IF_RESOLVE("res-igntc",		&opt_res_igntc)
#  if HAVE_RES_RETRANS
	IF_RESOLVE("res-maxretrans",	&opt_res_retrans)
#  endif
#  if HAVE_RES_RETRY
	IF_RESOLVE("res-maxretry",	&opt_res_retry)
#  endif
#if WITH_RESOLVE && HAVE_RESOLV_H && HAVE_RES_NSADDR_LIST
	IF_IP     ("res-nsaddr",	&opt_res_nsaddr)
#  endif
#  if WITH_RES_PRIMARY
	IF_RESOLVE("res-primary",	&opt_res_primary)
#  endif
	IF_RESOLVE("res-recurse",	&opt_res_recurse)
#  if HAVE_RES_RETRANS
	IF_RESOLVE("res-retrans",	&opt_res_retrans)
#  endif
#  if HAVE_RES_RETRY
	IF_RESOLVE("res-retry",		&opt_res_retry)
#  endif
	IF_RESOLVE("res-stayopen",	&opt_res_stayopen)
	IF_RESOLVE("res-usevc",		&opt_res_usevc)
#endif /* HAVE_RESOLV_H */
	IF_PROXY  ("resolv",	&opt_proxy_resolve)
	IF_PROXY  ("resolve",	&opt_proxy_resolve)
#ifdef IP_RETOPTS
	IF_IP     ("retopts",	&opt_ip_retopts)
#endif
#  if HAVE_RES_RETRANS
	IF_RESOLVE("retrans",		&opt_res_retrans)
#  endif
#if WITH_INTERFACE && defined(PACKET_AUXDATA)
	IF_SOCKET ("retrieve-vlan", 		&opt_retrieve_vlan)
#endif
	IF_RETRY  ("retry",	&opt_retry)
	IF_SOCKET ("reuseaddr",	&opt_so_reuseaddr)
#ifdef SO_REUSEPORT	/* AIX 4.3.3 */
	IF_SOCKET ("reuseport",	&opt_so_reuseport)
#endif /* defined(SO_REUSEPORT) */
#ifdef TCP_RFC1323
	IF_TCP    ("rfc1323",	&opt_tcp_rfc1323)
#endif
#ifdef IP_ROUTER_ALERT
	IF_IP     ("routeralert",	&opt_ip_router_alert)
#endif
#ifdef VREPRINT
	IF_TERMIOS("rprnt",	&opt_vreprint)
#endif
#ifdef O_RSHARE
	IF_OPEN   ("rshare",	&opt_o_rshare)
#endif
#ifdef O_RSYNC
	IF_OPEN   ("rsync",	&opt_o_rsync)
#endif
#ifdef IPV6_RTHDR
	IF_IP6    ("rthdr",	&opt_ipv6_rthdr)
#endif
	IF_INTERFACE("running",	&opt_iff_running)
#ifdef TCP_SACK_DISABLE
	IF_TCP    ("sack-disable",	&opt_tcp_sack_disable)
#endif
#ifdef TCP_SACKENA	/* OSF1 */
	IF_TCP    ("sackena",	&opt_tcp_sackena)
#endif
	IF_TERMIOS("sane",	&opt_sane)
#ifdef SCTP_MAXSEG
	IF_SCTP   ("sctp-maxseg",	&opt_sctp_maxseg)
	IF_SCTP   ("sctp-maxseg-late",	&opt_sctp_maxseg_late)
#endif
#ifdef SCTP_NODELAY
	IF_SCTP   ("sctp-nodelay",	&opt_sctp_nodelay)
#endif
#if WITH_FS && defined(FS_SECRM_FL)
	IF_ANY    ("secrm",	&opt_fs_secrm)
#endif
#ifdef SO_SECURITY_AUTHENTICATION
	IF_SOCKET ("security-authentication",	&opt_so_security_authentication)
#endif
#ifdef SO_SECURITY_ENCRYPTION_NETWORK
	IF_SOCKET ("security-encryption-network",	&opt_so_security_encryption_network)
#endif
#ifdef SO_SECURITY_ENCRYPTION_TRANSPORT
	IF_SOCKET ("security-encryption-transport",	&opt_so_security_encryption_transport)
#endif
#ifdef SO_SECURITY_AUTHENTICATION
	IF_SOCKET ("securityauthentication",	&opt_so_security_authentication)
#endif
#ifdef SO_SECURITY_ENCRYPTION_NETWORK
	IF_SOCKET ("securityencryptionnetwork",	&opt_so_security_encryption_network)
#endif
#ifdef SO_SECURITY_ENCRYPTION_TRANSPORT
	IF_SOCKET ("securityencryptiontransport",	&opt_so_security_encryption_transport)
#endif
#if HAVE_LSEEK64
	IF_ANY    ("seek",		&opt_lseek64_set)
	IF_ANY    ("seek-cur",		&opt_lseek64_cur)
	IF_ANY    ("seek-end",		&opt_lseek64_end)
	IF_ANY    ("seek-set",		&opt_lseek64_set)
#else
	IF_ANY    ("seek",		&opt_lseek32_set)
	IF_ANY    ("seek-cur",		&opt_lseek32_cur)
	IF_ANY    ("seek-end",		&opt_lseek32_end)
	IF_ANY    ("seek-set",		&opt_lseek32_set)
#endif
	IF_ANY    ("setgid",	&opt_setgid)
	IF_ANY    ("setgid-early",	&opt_setgid_early)
	IF_ANY 	  ("setlk",	&opt_f_setlk_wr)
	IF_ANY 	  ("setlk-rd",	&opt_f_setlk_rd)
	IF_ANY 	  ("setlk-wr",	&opt_f_setlk_wr)
	IF_ANY 	  ("setlkw",	&opt_f_setlkw_wr)
	IF_ANY 	  ("setlkw-rd",	&opt_f_setlkw_rd)
	IF_ANY 	  ("setlkw-wr",	&opt_f_setlkw_wr)
	IF_EXEC   ("setpgid",	&opt_setpgid)
#if WITH_EXEC || WITH_SYSTEM
	IF_EXEC   ("setsid",	&opt_setsid)
#endif
	IF_SOCKET ("setsockopt",	&opt_setsockopt)
	IF_SOCKET ("setsockopt-bin",	&opt_setsockopt_bin)
	IF_SOCKET ("setsockopt-int",	&opt_setsockopt_int)
	IF_SOCKET ("setsockopt-listen",	&opt_setsockopt_listen)
	IF_SOCKET ("setsockopt-string",	&opt_setsockopt_string)
	IF_ANY    ("setuid",	&opt_setuid)
	IF_ANY    ("setuid-early",	&opt_setuid_early)
#if WITH_SHELL
	IF_ANY	  ("shell", 		&opt_shell)
#endif
	IF_ANY    ("shut-close",	&opt_shut_close)
	IF_ANY    ("shut-down",	&opt_shut_down)
	IF_ANY    ("shut-none",	&opt_shut_none)
	IF_ANY    ("shut-null",		&opt_shut_null)
#if WITH_EXEC || WITH_SYSTEM
	IF_ANY    ("sid",	&opt_setsid)
#endif
	IF_EXEC   ("sighup",	&opt_sighup)
	IF_EXEC   ("sigint",	&opt_sigint)
#ifdef TCP_SIGNATURE_ENABLE
	IF_TCP    ("signature-enable",	&opt_tcp_signature_enable)
#endif
	IF_EXEC   ("sigquit",	&opt_sigquit)
#ifdef SIOCSPGRP
	IF_SOCKET ("siocspgrp",	&opt_siocspgrp)
#endif
	IF_PTY    ("sitout-eio", 	&opt_sitout_eio)
#ifdef IFF_SLAVE
	IF_INTERFACE("slave",	&opt_iff_slave)
#endif
	IF_SOCKET ("sndbuf",	&opt_so_sndbuf)
	IF_SOCKET ("sndbuf-late",	&opt_so_sndbuf_late)
#ifdef SO_SNDLOWAT
	IF_SOCKET ("sndlowat",	&opt_so_sndlowat)
#endif
#ifdef SO_SNDTIMEO
	IF_SOCKET ("sndtimeo",		&opt_so_sndtimeo)
#endif
#if defined(HAVE_SSL_set_tlsext_host_name) || defined(SSL_set_tlsext_host_name)
	IF_OPENSSL("snihost",    &opt_openssl_snihost)
#endif
#ifdef SO_ACCEPTCONN /* AIX433 */
	IF_SOCKET ("so-acceptconn",	&opt_so_acceptconn)
#endif /* SO_ACCEPTCONN */
#ifdef SO_ATTACH_FILTER
	IF_SOCKET ("so-attach-filter",	&opt_so_attach_filter)
#endif
#ifdef SO_AUDIT	/* AIX 4.3.3 */
	IF_SOCKET ("so-audit",	&opt_so_audit)
#endif /* SO_AUDIT */
#ifdef SO_BINDTODEVICE
	IF_SOCKET ("so-bindtodevice",	&opt_so_bindtodevice)
#endif
	IF_SOCKET ("so-broadcast",	&opt_so_broadcast)
#ifdef SO_BSDCOMPAT
	IF_SOCKET ("so-bsdcompat",	&opt_so_bsdcompat)
#endif
#ifdef SO_CKSUMRECV
	IF_SOCKET ("so-cksumrecv",	&opt_so_cksumrecv)
#endif /* SO_CKSUMRECV */
	IF_SOCKET ("so-debug",	&opt_so_debug)
#ifdef SO_DETACH_FILTER
	IF_SOCKET ("so-detach-filter", &opt_so_detach_filter)
#endif
#ifdef SO_DGRAM_ERRIND
	IF_SOCKET ("so-dgram-errind",	&opt_so_dgram_errind)
#endif
#ifdef SO_DONTLINGER
	IF_SOCKET ("so-dontlinger",	&opt_so_dontlinger)
#endif
	IF_SOCKET ("so-dontroute",	&opt_so_dontroute)
	IF_SOCKET ("so-error",	&opt_so_error)
	IF_SOCKET ("so-keepalive",	&opt_so_keepalive)
#ifdef SO_KERNACCEPT	/* AIX 4.3.3 */
	IF_SOCKET ("so-kernaccept",	&opt_so_kernaccept)
#endif /* SO_KERNACCEPT */
	IF_SOCKET ("so-linger",	&opt_so_linger)
#ifdef SO_NO_CHECK
	IF_SOCKET ("so-no-check",	&opt_so_no_check)
#endif
#ifdef SO_NOREUSEADDR	/* AIX 4.3.3 */
	IF_SOCKET ("so-noreuseaddr",	&opt_so_noreuseaddr)
#endif /* SO_NOREUSEADDR */
	IF_SOCKET ("so-oobinline",	&opt_so_oobinline)
#ifdef SO_PASSCRED
	IF_SOCKET ("so-passcred",	&opt_so_passcred)
#endif
#ifdef SO_PEERCRED
	IF_SOCKET ("so-peercred",	&opt_so_peercred)
#endif
#ifdef SO_PRIORITY
	IF_SOCKET ("so-priority",	&opt_so_priority)
#endif
#ifdef SO_PROTOTYPE
	IF_SOCKET ("so-protocol",	&opt_so_prototype)
	IF_SOCKET ("so-prototype",	&opt_so_prototype)
#endif
	IF_SOCKET ("so-rcvbuf",	&opt_so_rcvbuf)
	IF_SOCKET ("so-rcvbuf-late",	&opt_so_rcvbuf_late)
#ifdef SO_RCVLOWAT
	IF_SOCKET ("so-rcvlowat",	&opt_so_rcvlowat)
#endif
#ifdef SO_RCVTIMEO
	IF_SOCKET ("so-rcvtimeo",	&opt_so_rcvtimeo)
#endif
	IF_SOCKET ("so-reuseaddr",	&opt_so_reuseaddr)
#ifdef SO_REUSEPORT	/* AIX 4.3.3 */
	IF_SOCKET ("so-reuseport",	&opt_so_reuseport)
#endif /* defined(SO_REUSEPORT) */
#ifdef SO_SECURITY_AUTHENTICATION
	IF_SOCKET ("so-security-authentication",	&opt_so_security_authentication)
#endif
#ifdef SO_SECURITY_ENCRYPTION_NETWORK
	IF_SOCKET ("so-security-encryption-network",	&opt_so_security_encryption_network)
#endif
#ifdef SO_SECURITY_ENCRYPTION_TRANSPORT
	IF_SOCKET ("so-security-encryption-transport",	&opt_so_security_encryption_transport)
#endif
	IF_SOCKET ("so-sndbuf",	&opt_so_sndbuf)
	IF_SOCKET ("so-sndbuf-late",	&opt_so_sndbuf_late)
#ifdef SO_SNDLOWAT
	IF_SOCKET ("so-sndlowat",	&opt_so_sndlowat)
#endif
#ifdef SO_SNDTIMEO
	IF_SOCKET ("so-sndtimeo",	&opt_so_sndtimeo)
#endif
#ifdef SO_TIMESTAMP
	IF_SOCKET ("so-timestamp",	&opt_so_timestamp)
#endif
	IF_SOCKET ("so-type",	&opt_so_type)
#ifdef SO_USE_IFBUFS
	IF_SOCKET ("so-use-ifbufs",	&opt_so_use_ifbufs)
#endif /* SO_USE_IFBUFS */
#ifdef SO_USELOOPBACK /* AIX433, Solaris */
	IF_SOCKET ("so-useloopback",	&opt_so_useloopback)
#endif /* SO_USELOOPBACK */
	IF_SOCKET ("sockopt",		&opt_setsockopt)
	IF_SOCKET ("sockopt-bin",	&opt_setsockopt_bin)
	IF_SOCKET ("sockopt-int",	&opt_setsockopt_int)
	IF_SOCKET ("sockopt-listen",	&opt_setsockopt_listen)
	IF_SOCKET ("sockopt-string",	&opt_setsockopt_string)
	IF_SOCKS4 ("socksport",	&opt_socksport)
	IF_SOCKS4 ("socksuser",	&opt_socksuser)
	IF_SOCKET ("socktype",	&opt_so_type)
#if defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP)
	IF_IP     ("source-membership",	&opt_ip_add_source_membership)
#endif
	IF_IPAPP  ("sourceport",	&opt_sourceport)
	IF_IPAPP  ("sp",	&opt_sourceport)
	IF_TERMIOS("start",	&opt_vstart)
#if HAVE_RESOLV_H
	IF_RESOLVE("stayopen",		&opt_res_stayopen)
#endif /* HAVE_RESOLV_H */
	IF_EXEC   ("stderr",    &opt_stderr)
#ifdef TCP_STDURG
	IF_TCP    ("stdurg",	&opt_tcp_stdurg)
#endif
	IF_TERMIOS("stop",	&opt_vstop)
#ifdef I_POP
	IF_ANY    ("streams-i-pop-all",	&opt_streams_i_pop_all)
#endif
#ifdef I_PUSH
	IF_ANY    ("streams-i-push",	&opt_streams_i_push)
#endif
	IF_ANY    ("su",	&opt_substuser)
#if defined(HAVE_SETGRENT) && defined(HAVE_GETGRENT) && defined(HAVE_ENDGRENT)
	IF_ANY    ("su-d",	&opt_substuser_delayed)
#endif
	IF_ANY    ("su-e",	&opt_substuser_early)
	IF_ANY    ("substuser",	&opt_substuser)
#if defined(HAVE_SETGRENT) && defined(HAVE_GETGRENT) && defined(HAVE_ENDGRENT)
	IF_ANY    ("substuser-delayed",	&opt_substuser_delayed)
#endif
	IF_ANY    ("substuser-early",	&opt_substuser_early)
	IF_TERMIOS("susp",	&opt_vsusp)
#ifdef VSWTC
	IF_TERMIOS("swtc",	&opt_vswtc)
	IF_TERMIOS("swtch",	&opt_vswtc)
#endif
	IF_PTY    ("symbolic-link",	&opt_symbolic_link)
#ifdef O_SYNC
	IF_OPEN   ("sync",	&opt_o_sync)
#elif FS_SYNC_FL
	IF_ANY    ("sync",	&opt_fs_sync)
#endif
#ifdef TCP_SYNCNT
	IF_TCP    ("syncnt",	&opt_tcp_syncnt)
#endif
#ifdef TABDLY
#  ifdef TAB0
	IF_TERMIOS("tab0",	&opt_tab0)
#  endif
#  ifdef TAB1
	IF_TERMIOS("tab1",	&opt_tab1)
#  endif
#  ifdef TAB2
	IF_TERMIOS("tab2",	&opt_tab2)
#  endif
#  ifdef TAB3
	IF_TERMIOS("tab3",	&opt_tab3)
#  endif
#  if TABDLY_SHIFT >= 0
	IF_TERMIOS("tabdly",	&opt_tabdly)
#  endif
#endif
	IF_TERMIOS("tandem",	&opt_ixoff)
#ifdef TCP_ABORT_THRESHOLD  /* HP_UX */
	IF_TCP    ("tcp-abort-threshold",	&opt_tcp_abort_threshold)
#endif
#ifdef TCP_CONN_ABORT_THRESHOLD  /* HP_UX */
	IF_TCP    ("tcp-conn-abort-threshold",	&opt_tcp_conn_abort_threshold)
#endif
#ifdef TCP_CORK
	IF_TCP    ("tcp-cork",	&opt_tcp_cork)
#endif
#ifdef TCP_DEFER_ACCEPT	/* Linux 2.4.0 */
	IF_TCP    ("tcp-defer-accept",	&opt_tcp_defer_accept)
#endif
#ifdef TCP_INFO	/* Linux 2.4.0 */
	IF_TCP    ("tcp-info",	&opt_tcp_info)
#endif
#ifdef TCP_KEEPCNT	/* Linux 2.4.0 */
	IF_TCP    ("tcp-keepcnt",	&opt_tcp_keepcnt)
#endif
#ifdef TCP_KEEPIDLE	/* Linux 2.4.0 */
	IF_TCP    ("tcp-keepidle",	&opt_tcp_keepidle)
#endif
#ifdef TCP_KEEPINIT	/* OSF1 */
	IF_TCP    ("tcp-keepinit",	&opt_tcp_keepinit)
#endif
#ifdef TCP_KEEPINTVL	/* Linux 2.4.0 */
	IF_TCP    ("tcp-keepintvl",	&opt_tcp_keepintvl)
#endif
#ifdef TCP_LINGER2	/* Linux 2.4.0 */
	IF_TCP    ("tcp-linger2",	&opt_tcp_linger2)
#endif
#ifdef TCP_MAXSEG
	IF_TCP    ("tcp-maxseg",	&opt_tcp_maxseg)
	IF_TCP    ("tcp-maxseg-late",	&opt_tcp_maxseg_late)
#endif
#ifdef TCP_MD5SIG
	IF_TCP    ("tcp-md5sig",	&opt_tcp_md5sig)
#endif
#ifdef TCP_NODELAY
	IF_TCP    ("tcp-nodelay",	&opt_tcp_nodelay)
#endif
#ifdef TCP_NOOPT
	IF_TCP    ("tcp-noopt",		&opt_tcp_noopt)
#endif
#ifdef TCP_NOPUSH
	IF_TCP    ("tcp-nopush",	&opt_tcp_nopush)
#endif
#ifdef TCP_PAWS	/* OSF1 */
	IF_TCP    ("tcp-paws",		&opt_tcp_paws)
#endif
#ifdef TCP_QUICKACK
	IF_TCP    ("tcp-quickack",	&opt_tcp_quickack)
#endif
#ifdef TCP_RFC1323
	IF_TCP    ("tcp-rfc1323",	&opt_tcp_rfc1323)
#endif
#ifdef TCP_SACK_DISABLE
	IF_TCP    ("tcp-sack-disable",	&opt_tcp_sack_disable)
#endif
#ifdef TCP_SACKENA	/* OSF1 */
	IF_TCP    ("tcp-sackena",	&opt_tcp_sackena)
#endif
#ifdef TCP_SIGNATURE_ENABLE
	IF_TCP    ("tcp-signature-enable",	&opt_tcp_signature_enable)
#endif
#ifdef TCP_STDURG
	IF_TCP    ("tcp-stdurg",	&opt_tcp_stdurg)
#endif
#ifdef TCP_SYNCNT	/* Linux 2.4.0 */
	IF_TCP    ("tcp-syncnt",	&opt_tcp_syncnt)
#endif
#ifdef TCP_TSOPTENA	/* OSF1 */
	IF_TCP    ("tcp-tsoptena",	&opt_tcp_tsoptena)
#endif
#ifdef TCP_WINDOW_CLAMP	/* Linux 2.4.0 */
	IF_TCP    ("tcp-window-clamp",	&opt_tcp_window_clamp)
#endif
#if WITH_LIBWRAP
	IF_IPAPP  ("tcpwrap",		&opt_tcpwrappers)
	IF_IPAPP  ("tcpwrap-dir",	&opt_tcpwrap_etc)
	IF_IPAPP  ("tcpwrap-etc",	&opt_tcpwrap_etc)
#if WITH_LIBWRAP && defined(HAVE_HOSTS_ALLOW_TABLE)
	IF_IPAPP  ("tcpwrap-hosts-allow-table",	&opt_tcpwrap_hosts_allow_table)
#endif
#if WITH_LIBWRAP && defined(HAVE_HOSTS_DENY_TABLE)
	IF_IPAPP  ("tcpwrap-hosts-deny-table",	&opt_tcpwrap_hosts_deny_table)
#endif
	IF_IPAPP  ("tcpwrapper",	&opt_tcpwrappers)
	IF_IPAPP  ("tcpwrappers",	&opt_tcpwrappers)
#endif
	IF_TERMIOS("termios-cfmakeraw",	&opt_termios_cfmakeraw)
	IF_TERMIOS("termios-rawer",	&opt_termios_rawer)
#ifdef O_TEXT
	IF_ANY    ("text",	&opt_o_text)
#endif
	IF_UNIX   ("tightsocklen",	&xioopt_unix_tightsocklen)
	IF_TERMIOS("time",	&opt_vtime)
#ifdef SO_TIMESTAMP
	IF_SOCKET ("timestamp",	&opt_so_timestamp)
#endif
	IF_TERMIOS("tiocsctty",	&opt_tiocsctty)
#if WITH_FS && defined(FS_TOPDIR_FL)
	IF_ANY    ("topdir",	&opt_fs_topdir)
#endif
	IF_IP     ("tos",	&opt_ip_tos)
	IF_TERMIOS("tostop",	&opt_tostop)
#ifdef IP_TRANSPARENT
	IF_IP     ("transparent",    &opt_ip_transparent)
#endif
	IF_OPEN   ("trunc",	&opt_o_trunc)
#if HAVE_FTRUNCATE64
	IF_ANY    ("truncate",	&opt_ftruncate64)
#else
	IF_ANY    ("truncate",	&opt_ftruncate32)
#endif
#ifdef TCP_TSOPTENA	/* OSF1 */
	IF_TCP    ("tsoptena",	&opt_tcp_tsoptena)
#endif
	IF_IP     ("ttl",	&opt_ip_ttl)
	IF_TUN    ("tun-device",	&opt_tun_device)
	IF_TUN    ("tun-name",	&opt_tun_name)
	IF_TUN    ("tun-no-pi",	&opt_iff_no_pi)
	IF_TUN    ("tun-type",	&opt_tun_type)
	IF_SOCKET ("type",	&opt_so_type)
	IF_UDPLITE("udplite-recv-cscov",	&xioopt_udplite_recv_cscov)
	IF_UDPLITE("udplite-send-cscov",	&xioopt_udplite_send_cscov)
	IF_ANY    ("uid",	&opt_user)
	IF_NAMED  ("uid-e",	&opt_user_early)
	IF_ANY    ("uid-l",	&opt_user_late)
	IF_NAMED  ("umask",	&opt_umask)
	IF_IP6    ("unicast-hops",	&opt_ipv6_unicast_hops)
	IF_UNIX   ("unix-bind-tempname",	&xioopt_unix_bind_tempname)
	IF_UNIX   ("unix-tightsocklen",	&xioopt_unix_tightsocklen)
	IF_NAMED  ("unlink",	&opt_unlink)
	IF_NAMED  ("unlink-close",	&opt_unlink_close)
	IF_NAMED  ("unlink-early",	&opt_unlink_early)
	IF_NAMED  ("unlink-late",	&opt_unlink_late)
#if WITH_FS && defined(FS_UNRM_FL)
	IF_ANY    ("unrm",		&opt_fs_unrm)
#endif
	IF_INTERFACE("up",	&opt_iff_up)
#ifdef SO_USE_IFBUFS
	IF_SOCKET ("use-ifbufs",	&opt_so_use_ifbufs)
	IF_SOCKET ("useifbufs",		&opt_so_use_ifbufs)
#endif /* SO_USE_IFBUFS */
#ifdef SO_USELOOPBACK /* AIX433, Solaris */
	IF_SOCKET ("useloopback",	&opt_so_useloopback)
#endif /* SO_USELOOPBACK */
	IF_ANY    ("user",	&opt_user)
	IF_NAMED  ("user-early",	&opt_user_early)
	IF_ANY    ("user-late",	&opt_user_late)
#if HAVE_RESOLV_H
	IF_RESOLVE("usevc",		&opt_res_usevc)
#endif /* HAVE_RESOLV_H */
#if defined(AI_V4MAPPED)
	IF_IP	  ("v4mapped", 		&opt_ai_v4mapped)
#endif
#ifdef IPV6_V6ONLY
	IF_IP6    ("v6only",	&opt_ipv6_v6only)
#endif
#ifdef VDISCARD
	IF_TERMIOS("vdiscard",	&opt_vdiscard)
#endif
#ifdef VDSUSP	/* HP-UX */
	IF_TERMIOS("vdsusp",	&opt_vdsusp)
#endif
	IF_TERMIOS("veof",	&opt_veof)
	IF_TERMIOS("veol",	&opt_veol)
	IF_TERMIOS("veol2",	&opt_veol2)
	IF_TERMIOS("verase",	&opt_verase)
	IF_OPENSSL("verify",	&opt_openssl_verify)
	IF_TERMIOS("vintr",	&opt_vintr)
	IF_TERMIOS("vkill",	&opt_vkill)
	IF_TERMIOS("vlnext",	&opt_vlnext)
	IF_TERMIOS("vmin",	&opt_vmin)
	IF_TERMIOS("vquit",	&opt_vquit)
#ifdef VREPRINT
	IF_TERMIOS("vreprint",	&opt_vreprint)
#endif
	IF_TERMIOS("vstart",	&opt_vstart)
	IF_TERMIOS("vstop",	&opt_vstop)
	IF_TERMIOS("vsusp",	&opt_vsusp)
#ifdef VSWTC
	IF_TERMIOS("vswtc",	&opt_vswtc)
#endif
#ifdef VTDLY
#  ifdef VT0
	IF_TERMIOS("vt0",	&opt_vt0)
#  endif
#  ifdef VT1
	IF_TERMIOS("vt1",	&opt_vt1)
#  endif
	IF_TERMIOS("vtdly",	&opt_vtdly)
#endif
	IF_TERMIOS("vtime",	&opt_vtime)
#ifdef VWERASE
	IF_TERMIOS("vwerase",	&opt_vwerase)
#endif
#if HAVE_PTY && HAVE_POLL
	IF_PTY    ("wait-slave",	&opt_pty_wait_slave)
#endif /* HAVE_PTY && HAVE_POLL */
	IF_ANY    ("waitlock",	&opt_waitlock)
#if HAVE_PTY && HAVE_POLL
	IF_PTY    ("waitslave",	&opt_pty_wait_slave)
#endif /* HAVE_PTY && HAVE_POLL */
#ifdef VWERASE
	IF_TERMIOS("werase",	&opt_vwerase)
#endif
#ifdef TCP_WINDOW_CLAMP	/* Linux 2.4.0 */
	IF_TCP    ("window-clamp",	&opt_tcp_window_clamp)
#endif
#if WITH_LIBWRAP
	IF_IPAPP  ("wrap",		&opt_tcpwrappers)
#endif
	IF_OPEN   ("wronly",	&opt_o_wronly)
#ifdef XCASE
	IF_TERMIOS("xcase",	&opt_xcase)
#endif
#if defined(TABDLY) && defined(XTABS)
	IF_TERMIOS("xtabs",	&opt_xtabs)
#endif
	{ NULL }
} ;


/* walks the text argument a and writes its options that conform to groups
   to the array opts. Uses the option table 'optionnames'.
   returns 0 on success, -1 on error, 1 on unknown/wrong option
*/
int parseopts(const char **a, groups_t groups, struct opt **opts) {

   return parseopts_table(a, groups, opts, optionnames,
			  sizeof(optionnames)/sizeof(struct optname)-1);
}


/* walks the text argument a and writes its options that conform to groups
   to the array opts. Uses the specified option table.
   returns 0 on success, -1 on error, 1 on unknown/wrong option
*/
int parseopts_table(const char **a, groups_t groups, struct opt **opts,
	      const struct optname optionnames[], size_t optionnum) {
   int i=0;
   struct opt *opt;
   bool assign;
   const char *a0 = *a;
   unsigned long ulongval;
   long slongval;
   long long slonglongval;
   char token[2048], *tokp;  size_t len;
   int parsres;
   int result;
   uint8_t optbuf[256];  size_t optlen;
   const char *endkey[6+1];
   const char *endval[5+1];
   const char *assign_str = "=";
   const char *hquotes[] = {
      "'",
      NULL
   } ;
   const char *squotes[] = {
      "\"",
      NULL
   } ;
   const char *nests[] = {
      "(", ")",
      "[", "]",
      "{", "}",
      NULL
   } ;

   i = 0;
   /*endkey[i++] = xioparms.chainsep;*/	/* default: "|" */
   endkey[i++] = xioparms.pipesep;		/* default: "!!" */
   endkey[i++] = ","/*xioparms.comma*/;		/* default: "," */
   endkey[i++] = "=";
   endkey[i++] = NULL;

   i = 0;
   /*endval[i++] = xioparms.chainsep;*/	/* default: "|" */
   endval[i++] = xioparms.pipesep;		/* default: "!!" */
   endval[i++] = ","/*xioparms.comma*/;		/* default: "," */
   endval[i++] = NULL;

   i = 0;
   *opts = Malloc((i+8)*sizeof(struct opt));
   if (*opts == NULL) {
      return -1;
   }
   if (*a == NULL) {
      (*opts)[i].desc = ODESC_END;
      return 0;
   }

   while (true) {
      const struct optname *ent;

      if (a == NULL || *a == NULL || **a == '\0')
	 break;

      while (!strncmp(*a, ",", strlen(",")))  { (*a) += strlen(","); }
      a0 = *a;

      len = sizeof(token);  tokp = token;
      parsres =
	 nestlex(a, &tokp, &len, endkey, hquotes, squotes, nests,
		 true, true, false);
      if (parsres < 0) {
	 Error1("option too long: \"%s\"", *a);
	 return -1;
      } else if (parsres > 0) {
	 Error1("syntax error in \"%s\"", *a);
	 return -1;
      }
      if (tokp == token) {
	 /* no option found */
	 break;
      }
      *tokp = '\0';

      ent = (struct optname *)
	 keyw((struct wordent *)optionnames, token, optionnum);
      if (ent == NULL) {
	 Error1("parseopts_table(): unknown option \"%s\"", token);
	 continue;
      }

      if (!(ent->desc->group & groups) && !(ent->desc->group & GROUP_ANY) &&
	  (ent->desc->group != GROUP_ADDR) && !xioopts_ignoregroups) {
	 Error1("parseopts_table(): option \"%s\" not supported with this address type",
		token /*a0*/);
	 Info2("parseopts_table()  groups="F_groups_t", ent->group="F_groups_t,
	       groups, ent->desc->group);
#if 0
	 continue;
#endif
      }
      (*opts)[i].desc = ent->desc;

      if (!strncmp(*a, assign_str, strlen(assign_str))) {
	 /* there is an assignment (mostly "=") */
	 (*a) += strlen(assign_str);
	 len = sizeof(token);  tokp = token;
	 parsres =
	    nestlex(a, &tokp, &len, endval, hquotes, squotes, nests,
		    true, true, false);
	 if (parsres < 0) {
	    Error1("option too long:  \"%s\"", *a);
	    return -1;
	 } else if (parsres > 0) {
	    Error1("syntax error in \"%s\"", *a);
	    return -1;
	 }
	 *tokp = '\0';
	 assign = true;

      } else {
	 assign = false;
      }
      opt = &(*opts)[i];

      switch (ent->desc->type) {
      case TYPE_CONST:
	 if (assign) {
	    Error1("no value permitted for option \"%s\"",
		   ent->desc->defname);
	    continue;
	 }
	 Info1("setting option \"%s\"", ent->desc->defname);
	 break;
      case TYPE_BIN:
	 if (!assign) { Error1("option \"%s\": value required", a0);
	    continue; }
	 optlen = 0;
	 if ((result = dalan(token, optbuf, &optlen, sizeof(optbuf), 'i')) != 0) {
	    Error1("parseopts_table(): problem with \"%s\" data", token);
	    continue;
	 }
	 if (((*opts)[i].value.u_bin.b_data = memdup(optbuf, optlen)) == NULL) {
	    Error1("memdup(, "F_Zu"): out of memory", optlen);
	    return -1;
	 }
	 (*opts)[i].value.u_bin.b_len = optlen;
	 break;
      case TYPE_BYTE:
	 if (assign) {
	  unsigned long ul;
	  char *rest;
	  ul = Strtoul(token, &rest, 0, a0);
	  if (ul > UCHAR_MAX) {
	    Error3("parseopts(): option \"%s\": byte value exceeds limit (%lu vs. %u), using max",
		   a0, ul, UCHAR_MAX);
	    (*opts)[i].value.u_byte = UCHAR_MAX;
	  } else {
	    (*opts)[i].value.u_byte = ul;
	  }
	 } else {
	    (*opts)[i].value.u_byte = 1;
	 }
	 Info2("setting option \"%s\" to %d", ent->desc->defname,
	       (*opts)[i].value.u_byte);
	 break;
#if HAVE_BASIC_OFF_T==3
      case TYPE_OFF32:
#endif
      case TYPE_INT:
	 if (assign) {
	    char *rest;
	    (*opts)[i].value.u_int = Strtoul(token, &rest, 0, a0);
	 } else {
	    (*opts)[i].value.u_int = 1;
	 }
	 Info2("setting option \"%s\" to %d", ent->desc->defname,
	       (*opts)[i].value.u_int);
	 break;
      case TYPE_INT_NULL:
	 (*opts)[i].value2.u_bool = true;
	 if (assign && token[0] != '\0') {
	    char *rest;
	    (*opts)[i].value.u_int = Strtoul(token, &rest, 0, a0);
	 } else if (assign) {
	    (*opts)[i].value2.u_bool = false; 	/* NULL / no value */
	    Info1("setting option \"%s\" to NULL", ent->desc->defname);
	    break;
	 } else {
	    (*opts)[i].value.u_int = 1;
	 }
	 Info2("setting option \"%s\" to %d", ent->desc->defname,
	       (*opts)[i].value.u_int);
	 break;
      case TYPE_BOOL:
	 if (!assign) {
	    (*opts)[i].value.u_bool = 1;
	 } else {
	    char *rest;
	    (*opts)[i].value.u_bool = Strtoul(token, &rest, 0, a0);
	 }
	 Info2("setting option \"%s\" to %d", ent->desc->defname,
	       (*opts)[i].value.u_bool);
	 break;

#if HAVE_BASIC_SIZE_T==4
      case TYPE_SIZE_T:
#endif
      case TYPE_UINT:
	 if (!assign) {
	    (*opts)[i].value.u_uint = 1;
	 } else {
	    char *rest;
	    ulongval = Strtoul(token, &rest, 0, a0);
	    (*opts)[i].value.u_uint = ulongval;
	 }
	 Info2("setting option \"%s\" to %u", ent->desc->defname,
	       (*opts)[i].value.u_uint);
	 break;

#if HAVE_BASIC_SIZE_T==2
      case TYPE_SIZE_T:
#endif
      case TYPE_USHORT:
	 if (!assign) {
	    (*opts)[i].value.u_ushort = 1;
	 } else {
	    char *rest;
	    ulongval = Strtoul(token, &rest, 0, a0);
	    (*opts)[i].value.u_ushort = ulongval;
	 }
	 Info2("setting option \"%s\" to %u", ent->desc->defname,
	       (*opts)[i].value.u_ushort);
	 break;

#if HAVE_BASIC_OFF_T==5
      case TYPE_OFF32:
#endif
#if HAVE_STAT64 && defined(HAVE_BASIC_OFF64_T) && HAVE_BASIC_OFF64_T==5
      case TYPE_OFF64:
#endif
      case TYPE_LONG:
	 if (!assign) {
	    (*opts)[i].value.u_long = 1;
	 } else {
	    char *rest;
	    slongval = Strtoul(token, &rest, 0, a0);
	    (*opts)[i].value.u_long = slongval;
	 }
	 Info2("setting option \"%s\" to %lu", ent->desc->defname,
	       (*opts)[i].value.u_long);
	 break;

#if HAVE_BASIC_SIZE_T==6
      case TYPE_SIZE_T:
#endif
      case TYPE_ULONG:
	 if (!assign) {
	    (*opts)[i].value.u_ulong = 1;
	 } else {
	    char *rest;
	    ulongval = Strtoul(token, &rest, 0, a0);
	    (*opts)[i].value.u_ulong = ulongval;
	 }
	 Info2("setting option \"%s\" to %lu", ent->desc->defname,
	       (*opts)[i].value.u_ulong);
	 break;

#if HAVE_BASIC_OFF_T==7
      case TYPE_OFF32:
#endif
#if HAVE_TYPE_LONGLONG
      case TYPE_LONGLONG:
#  if HAVE_STAT64 && defined(HAVE_BASIC_OFF64_T) && HAVE_BASIC_OFF64_T==7
      case TYPE_OFF64:
#  endif
	 if (!assign) {
	    (*opts)[i].value.u_longlong = 1;
	 } else {
	    char *rest;
#  if HAVE_STRTOLL
	    slonglongval = Strtoll(token, &rest, 0, a0);
#  else
	    /* in this case, input value range is limited */
	    slonglongval = Strtol(token, &rest, 0, a0);
#  endif /* HAVE_STRTOLL */
	    if (*rest != '\0') {
	       Error1("parseopts(): trailing garbage in numerical arg of option \"%s\"", a0);
	    }
	    (*opts)[i].value.u_longlong = slonglongval;
	 }
	 Info2("setting option \"%s\" to %Lu", ent->desc->defname,
	       (*opts)[i].value.u_longlong);
	 break;
#endif /* HAVE_TYPE_LONGLONG */

      case TYPE_UIDT:
	 if (!assign) {
	    Error1("option \"%s\": value required", a0);
	    continue;
	 }
	 if (isdigit((*token)&0xff)) {
	    char *rest;
	    (*opts)[i].value.u_uidt = Strtoul(token, &rest, 0, a0);
	 } else {
	    struct passwd *pwd;
	    if ((pwd = getpwnam(token)) == NULL) {
	       Error1("getpwnam(\"%s\"): no such user", token);
	       continue;
	    }
	    (*opts)[i].value.u_uidt = getpwnam(token)->pw_uid;
	 }
	 Info2("setting option \"%s\" to %u", ent->desc->defname,
	       (*opts)[i].value.u_uidt);
	 break;

      case TYPE_GIDT:
	 if (!assign) { Error1("option \"%s\": value required", a0);
	    continue; }
	 if (isdigit((token[0])&0xff)) {
	    char *rest;
	    (*opts)[i].value.u_gidt = Strtoul(token, &rest, 0, a0);
	 } else {
	    struct group *grp;
	    grp = getgrnam(token);
	    if (grp == NULL) {
	       Error1("getgrnam(\"%s\"): no such group", token);
	       continue;
	    }
	    (*opts)[i].value.u_gidt = grp->gr_gid;
	 }
	 Info2("setting option \"%s\" to %u", ent->desc->defname,
	       (*opts)[i].value.u_gidt);
	 break;

      case TYPE_MODET:
	 if (!assign) { Error1("option \"%s\": value required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_modet = Strtoul(token, &rest, 8, a0);
	 }
	 Info2("setting option \"%s\" to %u", ent->desc->defname,
	       (*opts)[i].value.u_modet);
	 break;

      case TYPE_STRING:
	 if (!assign) {
	    Error1("option \"%s\": value required", a0);
	    continue;
	 }
	 if (((*opts)[i].value.u_string = strdup(token)) == NULL) {
	    Error("out of memory"); return -1;
	 }
	 Info2("setting option \"%s\" to \"%s\"", ent->desc->defname,
	       (*opts)[i].value.u_string);
	 break;

      case TYPE_STRING_NULL:
	 if (!assign) {
	    (*opts)[i].value.u_string = NULL;
	    Info1("setting option \"%s\" to NULL", ent->desc->defname);
	 } else {
	    (*opts)[i].value.u_string = strdup(token);
	    Info2("setting option \"%s\" to \"%s\"", ent->desc->defname,
		  (*opts)[i].value.u_string);
	 }
	 break;

#if LATER
      case TYPE_INT3:

	 break;
#endif

      case TYPE_TIMEVAL:
	 if (!assign) {
	    Error1("option \"%s\": value required", a0);
	    continue;
	 } else {
	    double val;
	    char *rest;
	    val = Strtod(token, &rest, a0);
	    if (val == HUGE_VAL || val == -HUGE_VAL ||
		val == 0.0 && errno == ERANGE) {
	       Error2("strtod(\"%s\", NULL): %s", token, strerror(errno));
	       val = 0.0;
	    }
	    (*opts)[i].value.u_timeval.tv_sec  = val;
	    (*opts)[i].value.u_timeval.tv_usec =
	       (val-(*opts)[i].value.u_timeval.tv_sec+0.0000005) * 1000000;
	 }
	 break;

#if HAVE_STRUCT_TIMESPEC
      case TYPE_TIMESPEC:
	 if (!assign) {
	    Error1("option \"%s\": value required", a0);
	    continue;
	 } else {
	    double val;
	    char *rest;
	    val = Strtod(token, &rest, a0);
	    if (val == HUGE_VAL || val == -HUGE_VAL ||
		val == 0.0 && errno == ERANGE) {
	       Error2("strtod(\"%s\", NULL): %s", token, strerror(errno));
	       val = 0.0;
	    }
	    (*opts)[i].value.u_timespec.tv_sec  = val;
	    (*opts)[i].value.u_timespec.tv_nsec =
	       (val-(*opts)[i].value.u_timespec.tv_sec) * 1000000000.;
	 }
	 break;
#endif /* HAVE_STRUCT_TIMESPEC */

#if HAVE_STRUCT_LINGER
      case TYPE_LINGER:
	 if (!assign) {
	    Error1("option \"%s\": value required", a0);
	    continue;
	 }
	 (*opts)[i].value.u_linger.l_onoff = 1;
	 {
	    char *rest;
	    (*opts)[i].value.u_linger.l_linger = Strtoul(token, &rest, 0, a0);
	 }
	 Info3("setting option \"%s\" to {%d,%d}", ent->desc->defname,
	       (*opts)[i].value.u_linger.l_onoff,
	       (*opts)[i].value.u_linger.l_linger);
	 break;
#endif /* HAVE_STRUCT_LINGER */

      case TYPE_INT_INT:
      case TYPE_INT_INTP:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 2 arguments required",
		      ent->desc->defname);
	    }
	    ++rest;
	    (*opts)[i].value2.u_int = Strtoul(rest, &rest, 0, a0);
	 }
	 Info3("setting option \"%s\" to %d:%d", ent->desc->defname,
	       (*opts)[i].value.u_int, (*opts)[i].value2.u_int);
	 break;

      case TYPE_INT_BIN:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in numerical arg of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 2 arguments required",
		      ent->desc->defname);
	    }
	    ++rest;
	    optlen = 0;
	    if ((result = dalan(rest, optbuf, &optlen, sizeof(optbuf), 'i')) != 0) {
	       Error1("parseopts_table(): problem with \"%s\" data", rest);
	       continue;
	    }
	    if (((*opts)[i].value2.u_bin.b_data = memdup(optbuf, optlen)) == NULL) {
	       Error1("memdup(, "F_Zu"): out of memory", optlen);
	       return -1;
	    }
	    (*opts)[i].value2.u_bin.b_len = optlen;
	 }
	 Info2("setting option \"%s\" to %d:..."/*!!!*/, ent->desc->defname,
	       (*opts)[i].value.u_int);
	 break;

      case TYPE_INT_STRING:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in numerical arg of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 2 arguments required",
		      ent->desc->defname);
	    }
	    ++rest;
	    if (((*opts)[i].value2.u_string = strdup(rest)) == NULL) {
	       Error("out of memory"); return -1;
	    }
	 }
	 Info3("setting option \"%s\" to %d:\"%s\"", ent->desc->defname,
	       (*opts)[i].value.u_int, (*opts)[i].value2.u_string);
	 break;

      case TYPE_INT_INT_INT:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 3 arguments required", ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 1st numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    (*opts)[i].value2.u_int = strtoul(rest, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 3 arguments required", ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 2nd numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    (*opts)[i].value3.u_int = Strtoul(rest, &rest, 0, a0);
	 }
	 Info4("setting option \"%s\" to %d:%d:%d", ent->desc->defname,
	       (*opts)[i].value.u_int, (*opts)[i].value2.u_int, (*opts)[i].value3.u_int);
	 break;

      case TYPE_INT_INT_BIN:
      case TYPE_INT_INT_GENERIC:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("option \"%s\": 3 arguments required",
		      ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 1st numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    (*opts)[i].value2.u_int = strtoul(rest, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("option \"%s\": 3 arguments required",
		      ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 2nd numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    optlen = 0;
	    if ((result = dalan(rest, optbuf, &optlen, sizeof(optbuf), 'i')) != 0) {
	       Error1("parseopts_table(): problem with \"%s\" data", rest);
	       continue;
	    }
	    if (((*opts)[i].value3.u_bin.b_data = memdup(optbuf, optlen)) == NULL) {
	       Error1("memdup(, "F_Zu"): out of memory", optlen);
	       return -1;
	    }
	    (*opts)[i].value3.u_bin.b_len = optlen;
	 }
	 Info3("setting option \"%s\" to %d:%d:..."/*!!!*/, ent->desc->defname,
	       (*opts)[i].value.u_int, (*opts)[i].value2.u_int);
	 break;

      case TYPE_INT_INT_STRING:
	 if (!assign) {
	    Error1("option \"%s\": values required", a0);
	    continue;
	 }
	 {
	    char *rest;
	    (*opts)[i].value.u_int = strtoul(token, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 3 arguments required",
		      ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 1st numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    (*opts)[i].value2.u_int = strtoul(rest, &rest, 0);
	    if (token == rest) {
	       Error1("parseopts(): missing numerical value of option \"%s\"", a0);
	    }
	    if (*rest == '\0') {
	       Error1("parseopts(): option \"%s\": 3 arguments required",
		      ent->desc->defname);
	    }
	    if (*rest != ':') {
	       Error1("parseopts(): trailing garbage in 2nd numerical arg of option \"%s\"", a0);
	    }
	    ++rest;
	    if (((*opts)[i].value3.u_string = strdup(rest)) == NULL) {
	       Error("out of memory"); return -1;
	    }
	 }
	 Info4("setting option \"%s\" to %d:%d:\"%s\"", ent->desc->defname,
	       (*opts)[i].value.u_int, (*opts)[i].value2.u_int,
	       (*opts)[i].value3.u_string);
	 break;

#if defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN)
      case TYPE_IP_MREQN:
	 xiotype_ip_add_membership(token, ent, opt);
	 break;
#endif /* defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN) */

#if defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP)
      case TYPE_IP_MREQ_SOURCE:
	 xiotype_ip_add_source_membership(token, ent, opt);
	 break;
#endif

#if WITH_IP6 && HAVE_STRUCT_GROUP_SOURCE_REQ
      case TYPE_GROUP_SOURCE_REQ:
	 xiotype_ip6_join_source_group(token, ent, opt);
	 break;
#endif

#if WITH_IP4
      case TYPE_IP4NAME:
	 {
	    /*! On a good day merge this with code in retropt_bind() */
	    struct sockaddr_in sa;  socklen_t salen = sizeof(sa);
	    const char *ends[] = { NULL };
	    const char *nests[] = { "[","]", NULL };
	    char buff[512], *buffp=buff; size_t bufspc = sizeof(buff)-1;

	    tokp = token;
	    parsres =
	    nestlex((const char **)&tokp, &buffp, &bufspc,
		    ends, NULL, NULL, nests,
		    true, false, false);
	    if (parsres < 0) {
	       Error1("option too long:  \"%s\"", *a);
	       return -1;
	    } else if (parsres > 0) {
	       Error1("syntax error in \"%s\"", *a);
	       return -1;
	    }
	    if (*tokp != '\0') {
	       Error1("trailing data in option \"%s\"", token);
	    }
	    *buffp = '\0';
	    if (xioresolve(buff, NULL, AF_INET, SOCK_DGRAM, IPPROTO_IP,
			   (union sockaddr_union *)&sa, &salen, NULL)
		!= STAT_OK) {
	       opt->desc = ODESC_ERROR; continue;
	    }
	    opt->value.u_ip4addr = sa.sin_addr;
	 }
	 break;
      case TYPE_IP4SOCK:
	 {
	    /*! On a good day merge this with code for TYPE_IP4NAME */
	    struct sockaddr_in sa;  socklen_t salen = sizeof(sa);
	    const char portsep[] = ":";
	    const char *ends[] = { portsep, NULL };
	    const char *nests[] = { "[","]", NULL };
	    char hostname[512], *hostp = hostname, *portp = NULL;
	    size_t hostlen = sizeof(hostname)-1;

	    tokp = token;
	    parsres =
	    nestlex((const char **)&tokp, &hostp, &hostlen,
		    ends, NULL, NULL, nests,
		    true, false, false);
	    if (parsres < 0) {
	       Error1("option too long:  \"%s\"", *a);
	       return -1;
	    } else if (parsres > 0) {
	       Error1("syntax error in \"%s\"", *a);
	       return -1;
	    }
	    *hostp++ = '\0';
	    if (!strncmp(tokp, portsep, strlen(portsep))) {
	       portp = tokp + strlen(portsep);
	    }
	    if (xioresolve(hostname, portp, AF_INET, SOCK_DGRAM, IPPROTO_IP,
			   (union sockaddr_union *)&sa, &salen, 0)
		!= STAT_OK) {
	       opt->desc = ODESC_ERROR; continue;
	    }
	    opt->value.u_ip4sock = sa;
	 }
	 break;
#endif /* defined(WITH_IP4) */

#if LATER
      case TYPE_GENERIC:
	 if (!assign) {
	    (*opts)[i].value.u_int = 1;
	 } else {
	    int rc;
	    size_t binlen = 64; 	/*!!!*/
	    if (((*opts[i]).value.u_bin.b_data = Malloc(binlen)) == NULL) Error("!!!");
	    (*opts)[i].value.u_bin.b_len = 0;
	    rc = dalan(token, (*opts)[i].value.u_bin.b_data,
		       &(*opts)[i].value.u_bin.b_len, binlen, 'i');
	    if (rc != 0) {
	       Error("!!!");
	    }
	    //(*opts)[i].value.u_bin.b_len
	 }
	 break;
#endif /* LATER */

      default:
	 Error2("parseopts_table(): internal error on option \"%s\": unimplemented type %d",
		ent->desc->defname, ent->desc->type);
	 continue;
      }

      ++i;
      if ((i % 8) == 0) {
	 *opts = Realloc(*opts, (i+8) * sizeof(struct opt));
	 if (*opts == NULL) {
	    return -1;
	 }
      }
   }

   /*(*opts)[i+1].desc = ODESC_END;*/
   (*opts)[i].desc = ODESC_END;
   return 0;
}


/* look for an option with the given properties
   return a pointer to the first matching valid option in the list
   Returns NULL when no matching option found */
const struct opt *searchopt(const struct opt *opts, groups_t groups, enum e_phase from, enum e_phase to,
		      enum e_func func) {
   int i;

   if (!opts)  return NULL;

   /* remember: struct opt are in an array */
   i = 0;
   while (opts[i].desc != ODESC_END) {
      if (opts[i].desc != ODESC_DONE &&
	  (groups == 0 || (groups && (opts[i].desc->group&groups))) &&
	  (from == 0 || (from <= opts[i].desc->phase)) &&
	  (to   == 0 || (opts[i].desc->phase <= to)) &&
	  (func == 0 || (opts[i].desc->func == func))) {
	 return &opts[i];
      }
      ++i;
   }
   return NULL;
}

/* copy the already parsed options for repeated application, but only those
   matching groups ANY and <groups> */
struct opt *copyopts(const struct opt *opts, groups_t groups) {
   struct opt *new;
   int i, j, n;

   if (!opts)  return NULL;

   /* just count the options in the array */
   i = 0; while (opts[i].desc != ODESC_END) {
      ++i;
   }
   n = i+1;

   new = Malloc(n * sizeof(struct opt));
   if (new == NULL) {
      return NULL;
   }

   i = 0, j = 0;
   while (i < n-1) {
      if (opts[i].desc == ODESC_DONE) {
	 new[j].desc = ODESC_DONE;
      } else if ((opts[i].desc->group & (GROUP_ANY&~GROUP_PROCESS)) ||
		 (opts[i].desc->group & groups)) {
	 new[j++] = opts[i];
      }
      ++i;
   }
   new[j].desc = ODESC_END;
   return new;
}

/* move options to a new options list
   move only those matching <groups> */
struct opt *moveopts(struct opt *opts, groups_t groups) {
   struct opt *new;
   int i, j, n;

   if (!opts)  return NULL;

   /* just count the options in the array */
   i = 0; j = 0; while (opts[i].desc != ODESC_END) {
      if (opts[i].desc != ODESC_DONE &&
	  opts[i].desc != ODESC_ERROR)
	 ++j;
      ++i;
   }
   n = i;

   new = Malloc((j+1) * sizeof(struct opt));
   if (new == NULL) {
      return NULL;
   }

   i = 0, j = 0;
   while (i < n) {
      if (opts[i].desc == ODESC_DONE ||
	  opts[i].desc == ODESC_ERROR) {
	 ++i; continue;
      } else if (opts[i].desc->group & groups) {
	 new[j++] = opts[i];
	 opts[i].desc = ODESC_DONE;
      }
      ++i;
   }
   new[j].desc = ODESC_END;
   return new;
}

/* return the number of yet unconsumed options; -1 on error */
int leftopts(const struct opt *opts) {
   const struct opt *opt = opts;
   int num = 0;

   if (!opts)  return 0;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR) {
	 ++num;
      }
      ++opt;
   }
   return num;
}

/* show as warning which options are still unused */
int showleft(const struct opt *opts) {
   const struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR) {
	 Warn1("showleft(): option \"%s\" not inquired", opt->desc->defname);
      }
      ++opt;
   }
   return 0;
}


/* determines the address group from mode_t */
/* does not set GROUP_FD; cannot determine GROUP_TERMIOS ! */
groups_t _groupbits(mode_t mode) {
   groups_t result = 0;

   switch ((mode&S_IFMT)>>12) {
   case (S_IFIFO>>12):	/* 1, FIFO */
      result = GROUP_FIFO;   break;
   case (S_IFCHR>>12):	/* 2, character device */
      result = GROUP_CHR|GROUP_TERMIOS;    break;
   case (S_IFDIR>>12):	/* 4, directory !!! not supported */
      result = GROUP_NONE;   break;
   case (S_IFBLK>>12):	/* 6, block device */
      result = GROUP_BLK;    break;
   case (S_IFREG>>12):	/* 8, regular file */
      result = GROUP_REG;    break;
   case (S_IFLNK>>12):	/* 10, symbolic link !!! not supported */
      result = GROUP_NONE;   break;
#ifdef S_IFSOCK
   case (S_IFSOCK>>12): /* 12, socket */
      result = GROUP_SOCKET|GROUP_SOCK_UNIX; break;
#else
   default: /* some systems (pure POSIX.1) do not know S_IFSOCK */
      result = GROUP_SOCKET|GROUP_SOCK_UNIX; break;
#endif
   }
   Debug2("_groupbits("F_mode") -> "F_groups_t, mode, result);
   return result;
}

/* does not set GROUP_FD */
groups_t groupbits(int fd) {
#if HAVE_STAT64
   struct stat64 buf;
#else
   struct stat buf;
#endif /* !HAVE_STAT64 */
   groups_t result;

   if (
#if HAVE_STAT64
       Fstat64(fd, &buf) < 0
#else
       Fstat(fd, &buf) < 0
#endif /* !HAVE_STAT64 */
      ) {
      Error4("groupbits(%d): fstat(%d, %p): %s",
	     fd, fd, &buf, strerror(errno));
      return -1;
   }
   result = _groupbits(buf.st_mode&S_IFMT);
   if (result == GROUP_CHR) {
      if (Isatty(fd) > 0) {
	 result |= GROUP_TERMIOS;
      }
   }
   return result;
}

#if 0	/* currently not used */
int retropt(struct opt *opts, int optcode, union integral *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}
#endif

static struct opt *xio_findopt(struct opt *opts, int optcode) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 return opt;
      }
      ++opt;
   }
   return NULL;
}

int retropt_timespec(struct opt *opts, int optcode, struct timespec *result) {
   struct opt *opt;

   if (!(opt = xio_findopt(opts, optcode))) {
      return -1;
   }
   *result = opt->value.u_timespec;
   opt->desc = ODESC_DONE;
   return 0;
}


/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its bool value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_bool(struct opt *opts, int optcode, bool *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_bool;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

#if 0	/* currently not used */
/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its short value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_short(struct opt *opts, int optcode, short *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_short;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}
#endif

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its unsigned short value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_ushort(struct opt *opts, int optcode, unsigned short *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_ushort;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its int value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_int(struct opt *opts, int optcode, int *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 char *rest;
	 switch (opt->desc->type) {
	 case TYPE_INT: *result = opt->value.u_int; break;
	 case TYPE_STRING: *result = strtol(opt->value.u_string, &rest, 0);
	    if (*rest != '\0') {
	       Error1("retropts_int(): trailing garbage in numerical arg of option \"%s\"",
		      opt->desc->defname);
	    }
	    break;
	 default: Error2("cannot convert type %d of option %s to int",
			 opt->desc->type, opt->desc->defname);
	    opt->desc = ODESC_ERROR;
	    return -1;
	 }
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its int value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_2integrals(struct opt *opts, int optcode,
		       union integral *value1, union integral *value2)
{
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc->optcode == optcode) {
	 switch (opt->desc->type) {
	 case TYPE_INT_NULL:
	 /* ...and many more types */
	    *value1 = opt->value;
	    *value2 = opt->value2;
	    break;
	 default: Error2("cannot convert type %d of option %s to int/NULL",
			 opt->desc->type, opt->desc->defname);
	    opt->desc = ODESC_ERROR;
	    return -1;
	 }
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its unsigned int value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_uint(struct opt *opts, int optcode, unsigned int *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_uint;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its long value in *result, "consumes" the option,
   and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_long(struct opt *opts, int optcode, long *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_long;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its unsigned long value in *result, "consumes" the
   option, and returns 0.
   If the option is not found, *result is not modified, and -1 is returned. */
int retropt_ulong(struct opt *opts, int optcode, unsigned long *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 *result = opt->value.u_ulong;
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}

#if 0	/* currently not used */
/* get the value of a FLAG typed option, and apply it to the appropriate
   bit position. Mark the option as consumed (done). return 0 if options was found and successfully applied,
   or -1 if option was not in opts */
int retropt_flag(struct opt *opts, int optcode, flags_t *result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 if (opt->value.u_bool) {
	    *result |= opt->desc->major;
	 } else {
	    *result &= ~opt->desc->major;
	 }
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}
#endif

/* Looks for the first option of type <optcode>. If the option is found,
   this function stores its character pointer value in *result, "consumes" the
   option, and returns 0. Note that, for options of type STRING_NULL, the
   character pointer might degenerate to NULL.
   The resulting string is malloc'ed and should be freed after use.
   If the option is not found, *result is not modified, and -1 is returned.
 */
int retropt_string(struct opt *opts, int optcode, char **result) {
   struct opt *opt = opts;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->optcode == optcode) {
	 if (opt->value.u_string == NULL) {
	    *result = NULL;
	 } else if ((*result = strdup(opt->value.u_string)) == NULL) {
	    Error1("strdup("F_Zu"): out of memory",
		   strlen(opt->value.u_string));
	    return -1;
	 }
	 opt->desc = ODESC_DONE;
	 return 0;
      }
      ++opt;
   }
   return -1;
}


#if _WITH_SOCKET
/* looks for a bind option and, if found, overwrites the complete contents of
   sa with the appropriate value(s).
   returns STAT_OK if option exists and could be resolved,
   STAT_NORETRY if option exists but had error,
   or STAT_NOACTION if it does not exist */
/* currently only for IP (v4, v6) and raw (PF_UNSPEC) */
int retropt_bind(struct opt *opts,
		 int af,
		 int socktype,
		 int ipproto,
		 struct sockaddr *sa,
		 socklen_t *salen,
		 int feats,	/* TCP etc: 1..address allowed,
					    3..address and port allowed
				   UNIX (or'd): 1..tight
						2..abstract
						4..templatename
				*/
		 const int ai_flags[2])
{
   const char portsep[] = ":";
   const char *ends[] = { portsep, NULL };
   const char *nests[] = { "[", "]", NULL };
   bool portallowed;
   char *bindname, *bindp;
   char hostname[512], *hostp = hostname, *portp = NULL;
   size_t hostlen = sizeof(hostname)-1;
   int parsres;
   int ai_flags2[2];
   int result;

   if (retropt_string(opts, OPT_BIND, &bindname) < 0) {
      return STAT_NOACTION;
   }
   bindp = bindname;

   switch (af) {

   case AF_UNSPEC:
      {
	 size_t p = 0;
	 dalan(bindname, (uint8_t *)sa->sa_data, &p, *salen-sizeof(sa->sa_family), 'i');
	 *salen = p + sizeof(sa->sa_family);
	 *salen = p +
#if HAVE_STRUCT_SOCKADDR_SALEN
	    sizeof(sa->sa_len) +
#endif
	    sizeof(sa->sa_family);
#if HAVE_STRUCT_SOCKADDR_SALEN
	 sa->sa_len = *salen;
#endif
      }
      break;

#if WITH_IP4 || WITH_IP6 || WITH_VSOCK
#if WITH_VSOCK
   case AF_VSOCK:
#endif
#if WITH_IP4
   case AF_INET:
#endif
#if WITH_IP6
   case AF_INET6:
#endif /*WITH_IP6 */
      portallowed = (feats>=2);
      parsres =
	 nestlex((const char **)&bindp, &hostp, &hostlen, ends, NULL, NULL, nests,
		 true, false, false);
      if (parsres < 0) {
	 Error1("option too long:  \"%s\"", bindp);
	 return STAT_NORETRY;
      } else if (parsres > 0) {
	 Error1("syntax error in \"%s\"", bindp);
	 return STAT_NORETRY;
      }
      *hostp++ = '\0';
      if (!strncmp(bindp, portsep, strlen(portsep))) {
	 if (!portallowed) {
	    Error("port specification not allowed in this bind option");
	    return STAT_NORETRY;
	 } else {
	    portp = bindp + strlen(portsep);
	 }
      }

      /* Set AI_PASSIVE, except when it is explicitely disabled */
      ai_flags2[0] = ai_flags[0];
      ai_flags2[1] = ai_flags[1];
      if (!(ai_flags2[1] & AI_PASSIVE))
      ai_flags2[0] |= AI_PASSIVE;

      if ((result =
	   xioresolve(hostname[0]!='\0'?hostname:NULL, portp,
		      af, socktype, ipproto,
		      (union sockaddr_union *)sa, salen, ai_flags2))
	  != STAT_OK) {
	 Error("error resolving bind option");
	 return STAT_NORETRY;
      }
      break;
#endif /* WITH_IP4 || WITH_IP6 || WITH_VSOCK */

#if WITH_UNIX
   case AF_UNIX:
      {
	 bool abstract = (feats&2);
	 bool tight = (feats&1);
	 bool templatename = (feats&4);
	 struct sockaddr_un *s_un = (struct sockaddr_un *)sa;
	 if (templatename) {
		int i = 0;
		srandom(getpid());
		for (; i < strlen(bindname); i++) {
			if (bindname[i] == 'X') {
				bindname[i] = 'a' + (char) (random() % ('z' - 'a'));
			}
		}
	 }
	 *salen = xiosetunix(af, s_un, bindname, abstract, tight);
      }
      break;
#endif /* WITH_UNIX */

   default:
      Error1("bind: unknown address family %d", af);
      return STAT_NORETRY;
   }
   return STAT_OK;
}

#if 0
#if _WITH_IP4 || _WITH_IP6
/* Looks for a bind option and, if found, calls xiogetaddrinfo and provides the
   results list in bindlist.
   returns STAT_OK if option exists and could be resolved,
   STAT_NORETRY if option exists but had error,
   or STAT_NOACTION if it does not exist */
int retropt_bind_gai(struct opt *opts,
	int af,
	int socktype,
	int ipproto,
	struct addrinfo **bindlist,
	int feats,	/* TCP etc: 1..address allowed,
				    3..address and port allowed
			*/
	const int ai_flags[2])
{

   if (retropt_string(opts, OPT_BIND, &bindname) < 0) {
      return STAT_NOACTION;
   }
   bindp = bindname;

   switch (af) {

#if WITH_IP4 || WITH_IP6
   case AF_UNSPEC:
#if WITH_IP4
   case AF_INET:
#endif
#if WITH_IP6
   case AF_INET6:
#endif /*WITH_IP6 */
      break;
#endif /* WITH_IP4 || WITH_IP6 */

   default:
      Error1("bind: unknown address family %d", af);
      return STAT_NORETRY;
   }
   return STAT_OK;
}
#endif /* _WITH_IP4 || _WITH_IP6 */
#endif /* 0 */

#endif /* _WITH_SOCKET */


int applyopt_seek32(
	int fd,
	struct opt *opt)
{
	if (Lseek(fd, opt->value.u_off, opt->desc->major) < 0) {
		Error4("lseek(%d, "F_off", %d): %s",
		       fd, opt->value.u_off, opt->desc->major, strerror(errno));
		return -1;
	}
	return 0;
}

#if HAVE_LSEEK64
int applyopt_seek64(
	int fd,
	struct opt *opt)
{
	/*! this depends on off64_t atomic type */
	if (Lseek64(fd, opt->value.u_off64, opt->desc->major) < 0) {
		Error4("lseek64(%d, "F_off64", %d): %s",
		       fd, opt->value.u_off64, opt->desc->major,
		       strerror(errno));
		return -1;
	}
	return 0;
}
#endif /* HAVE_LSEEK64 */

int applyopt_fcntl(
	int fd,
	struct opt *opt)
{
	int flag;

	if (opt->desc->type == TYPE_BOOL) {
	   /* Retrieve existing flag settings */
	   if ((flag = Fcntl(fd, opt->desc->major-1)) < 0) {
		Error3("fcntl(%d, %d): %s",
		       fd, opt->desc->major, strerror(errno));
		return -1;
	   }
	   if (opt->value.u_bool) {
	      flag |= opt->desc->minor;
	   } else {
	      flag &= ~opt->desc->minor;
	   }
	   if (Fcntl_i(fd, opt->desc->major, flag) < 0) {
	      Error4("fcntl(%d, %d, 0x%x): %s",
		     fd, opt->desc->major, flag, strerror(errno));
	      return -1;
	   }

	} else if (opt->desc->type == TYPE_INT) {
	   if (Fcntl_i(fd, opt->desc->major, opt->value.u_int) < 0) {
	      Error4("fcntl(%d, %d, 0x%x): %s",
		     fd, opt->desc->major, opt->value.u_int, strerror(errno));
	      return -1;
	   }
	} else {
	   Error2("applyopt_fcntl(\"%s\", ...): INTERNAL: type %d not implemented",
		  opt->desc->defname, opt->desc->type);
	   return -1;
	}
	return 0;
}

int applyopt_ioctl(
	int fd,
	struct opt *opt)
{
	if (Ioctl(fd, opt->desc->major, (void *)&opt->value) < 0) {
		Error4("ioctl(%d, 0x%x, %p): %s",
		       fd, opt->desc->major, (void *)&opt->value, strerror(errno));
		return -1;
	}
	return 0;
}

int applyopt_ioctl_mask_long(
	int fd,
	struct opt *opt)
{
	long val;
	int getreq = opt->desc->major;
	int setreq = opt->desc->minor;
	long mask  = opt->desc->arg3;

	if (Ioctl(fd, getreq, (void *)&val) < 0) {
		Error4("ioctl(%d, 0x%x, %p): %s",
		       fd, opt->desc->major, (void *)&val, strerror(errno));
		return -1;
	}
	val &= ~mask;
	if (opt->value.u_bool)
		val |= mask;
	if (Ioctl(fd, setreq, (void *)&val) < 0) {
		Error4("ioctl(%d, 0x%x, %p): %s",
		       fd, opt->desc->major, (void *)&val, strerror(errno));
		return -1;
	}
	return 0;
}

int applyopt_ioctl_generic(
	int fd,
	struct opt *opt)
{
	switch (opt->desc->type) {
	case TYPE_INT:
		if (Ioctl(fd, opt->value.u_int, NULL) < 0) {
			Error3("ioctl(%d, 0x%x, NULL): %s",
			       fd, opt->value.u_int, strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_INT:
		if (Ioctl_int(fd, opt->value.u_int, opt->value2.u_int) < 0) {
			Error4("ioctl(%d, 0x%x, 0x%x): %s",
			       fd, opt->value.u_int, opt->value2.u_int, strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_INTP:
		if (Ioctl(fd, opt->value.u_int, (void *)&opt->value2.u_int) < 0) {
			Error4("ioctl(%d, 0x%x, %p): %s",
			       fd, opt->value.u_int, (void *)&opt->value2.u_int, strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_BIN:
		if (Ioctl(fd, opt->value.u_int, (void *)opt->value2.u_bin.b_data) < 0) {
			Error4("ioctl(%d, 0x%x, %p): %s",
			       fd, opt->value.u_int, (void *)opt->value2.u_bin.b_data, strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_STRING:
		if (Ioctl(fd, opt->value.u_int, (void *)opt->value2.u_string) < 0) {
			Error4("ioctl(%d, 0x%x, %p): %s",
			       fd, opt->value.u_int, (void *)opt->value2.u_string, strerror(errno));
			return -1;
		}
		break;
	default:
		Error3("%s(opt:%s) data type %d not implemented",
		       __func__, opt->desc->defname, opt->desc->type);
		return -1;
	}
	return 0;
}

int applyopt_sockopt(
	int fd,
	struct opt *opt)
{
#if 0 && HAVE_STRUCT_LINGER
	if (opt->desc->optcode == OPT_SO_LINGER) {
		struct linger lingstru;
		lingstru.l_onoff = (opt->value.u_int>=0 ? 1 : 0);
		lingstru.l_linger = opt->value.u_int;
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor, &lingstru,
			       sizeof(lingstru)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%d,%d}, "F_Zu,
			       fd, opt->desc->major, opt->desc->minor, lingstru.l_onoff,
			       lingstru.l_linger, sizeof(lingstru));
			return -1;
		}
	}
	return 0;
#endif /* HAVE_STRUCT_LINGER */

	switch (opt->desc->type) {
	case TYPE_BIN:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_bin.b_data, opt->value.u_bin.b_len)
		    < 0) {
			Error6("setsockopt(%d, %d, %d, %p, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_bin.b_data, opt->value.u_bin.b_len,
			       strerror(errno));
			return -1;
		}
		break;
	case TYPE_BOOL:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_bool, sizeof(opt->value.u_bool))
		    < 0) {
			Error6("setsockopt(%d, %d, %d, {%d}, "F_Zu"): %s", fd,
			       opt->desc->major, opt->desc->minor,
			       opt->value.u_bool, sizeof(opt->value.u_bool),
			       strerror(errno));
			return -1;
		}
		break;
	case TYPE_BYTE:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_byte, sizeof(uint8_t)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%u}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_byte, sizeof(uint8_t), strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_int, sizeof(int)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%d}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_int, sizeof(int), strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_NULL:
		if (opt->value2.u_bool &&
		    Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_int, sizeof(int)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%d}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_int, sizeof(int), strerror(errno));
			return -1;
		}
		break;
	case TYPE_LONG:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_long, sizeof(long)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%ld}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_long, sizeof(long), strerror(errno));
			return -1;
		}
		break;
	case TYPE_STRING:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_string,
			       strlen(opt->value.u_string)+1) < 0) {
			Error6("setsockopt(%d, %d, %d, \"%s\", "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_string, strlen(opt->value.u_string)+1,
			       strerror(errno));
			return -1;
		}
		break;
	case TYPE_UINT:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_uint, sizeof(unsigned int)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%u}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_uint, sizeof(unsigned int),
			       strerror(errno));
			return -1;
		}
		break;
	case TYPE_TIMEVAL:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_timeval, sizeof(struct timeval)) < 0) {
			Error7("setsockopt(%d, %d, %d, {%ld,%ld}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       opt->value.u_timeval.tv_sec, opt->value.u_timeval.tv_usec,
			       sizeof(struct timeval), strerror(errno));
			return -1;
		}
		break;
#if HAVE_STRUCT_LINGER
	case TYPE_LINGER:
	{
		struct linger lingstru;
		lingstru.l_onoff = (opt->value.u_linger.l_onoff>=0 ? 1 : 0);
		lingstru.l_linger = opt->value.u_linger.l_linger;
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &lingstru, sizeof(lingstru)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%d,%d}): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       lingstru.l_onoff, lingstru.l_linger,
			       strerror(errno));
			return -1;
		}
	}
	break;
#endif /* HAVE_STRUCT_LINGER */
#if defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN)
	case TYPE_IP_MREQN:
		/* handled in applyopts_single */
		break;
#endif /* defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN) */

#if defined(HAVE_STRUCT_GROUP_SOURCE_REQ)
	case TYPE_GROUP_SOURCE_REQ:
		/* handled in applyopts_single */
		break;
#endif /* defined(HAVE_STRUCT_GROUP_SOURCE_REQ) */

		/*! still many types missing; implement on demand */
#if WITH_IP4
	case TYPE_IP4NAME:
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       &opt->value.u_ip4addr, sizeof(opt->value.u_ip4addr)) < 0) {
			Error6("setsockopt(%d, %d, %d, {0x%x}, "F_Zu"): %s",
			       fd, opt->desc->major, opt->desc->minor,
			       *(uint32_t *)&opt->value.u_ip4addr, sizeof(opt->value.u_ip4addr),
			       strerror(errno));
			return -1;
		}
		break;
#endif /* defined(WITH_IP4) */
	default:
#if !NDEBUG
		Error3("%s(opt:\"%s\"): type %d no implemented",
		      __func__, opt->desc->defname, opt->desc->type);
#else
		Warn3("%s(opt:\"%s\"): type %d no implemented",
		      __func__, opt->desc->defname, opt->desc->type);
#endif
		return -1;
	}
	return 0;
}

/* Appends the provided data to the current value of this sockopt.
   Used (e.g.) for IP_OPTIONS.
*/
int applyopt_sockopt_append(
	int fd,
	struct opt *opt)
{
	switch (opt->desc->type) {
		uint8_t data[256];
		socklen_t oldlen, newlen;
	case TYPE_BIN:
		oldlen = sizeof(data);
		if (Getsockopt(fd, opt->desc->major, opt->desc->minor,
			       data, &oldlen)
		    < 0) {
			Error6("getsockopt(%d, %d, %d, %p, {"F_socklen"}): %s",
			       fd, opt->desc->major, opt->desc->minor, data, oldlen,
			       strerror(errno));
			return -1;
		}
		memcpy(&data[oldlen], opt->value.u_bin.b_data,
		       MIN(opt->value.u_bin.b_len, sizeof(data)-oldlen));
		newlen = oldlen + MIN(opt->value.u_bin.b_len, sizeof(data)-oldlen);
		if (Setsockopt(fd, opt->desc->major, opt->desc->minor,
			       data, newlen)
		    < 0) {
			Error6("setsockopt(%d, %d, %d, %p, %d): %s",
			       fd, opt->desc->major, opt->desc->minor, data, newlen,
			       strerror(errno));
			return -1;
		}
		break;
	default:
		Error2("internal: option \"%s\": unimplemented type %d",
		       opt->desc->defname, opt->desc->type);
		break;
	}
	return 0;
}

int applyopt_sockopt_generic(
	int fd,
	struct opt *opt)
{
	switch (opt->desc->type) {
	case TYPE_INT_INT_INT:
		if (Setsockopt(fd, opt->value.u_int, opt->value2.u_int,
			       &opt->value3.u_int, sizeof(int)) < 0) {
			Error6("setsockopt(%d, %d, %d, {%d}, "F_Zu"): %s",
			       fd, opt->value.u_int, opt->value2.u_int,
			       opt->value3.u_int, sizeof(int), strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_INT_BIN:
		if (Setsockopt(fd, opt->value.u_int, opt->value2.u_int,
			       opt->value3.u_bin.b_data, opt->value3.u_bin.b_len) < 0) {
			Error5("setsockopt(%d, %d, %d, {...}, "F_Zu"): %s",
			       fd, opt->value.u_int, opt->value2.u_int,
			       opt->value3.u_bin.b_len, strerror(errno));
			return -1;
		}
		break;
	case TYPE_INT_INT_STRING:
		if (Setsockopt(fd, opt->value.u_int, opt->value2.u_int,
			       opt->value3.u_string,
			       strlen(opt->value3.u_string)+1) < 0) {
			Error6("setsockopt(%d, %d, %d, \"%s\", "F_Zu"): %s",
			       fd, opt->value.u_int, opt->value2.u_int,
			       opt->value3.u_string, strlen(opt->value3.u_string)+1,
			       strerror(errno));
			return -1;
		}
		break;
	default:
		Error3("%s(opt:\"%s\"): INTERNAL: data type %d not implemented",
		       __func__, opt->desc->defname, opt->desc->type);
		return -1;
	}
	return 0;
}

int applyopt_flock(
	int fd,
	struct opt *opt)
{
	if (Flock(fd, opt->desc->major) < 0) {
		Error3("flock(%d, %d): %s",
		       fd, opt->desc->major, strerror(errno));
		return -1;
	}
	return 0;
}

/* Applies an option that needs handling specific to its OPT_* setting.
   Does not overwrite the option instance with ODESC_DONE or ODESC_ERROR,
   instead:
   Returns 0 if option was just applied (caller has to ODESC_DONE);
   returns -1 if a problem occurred (caller has to ODESC_ERROR);
   returns 1 if the instance has to be kept, this happens when the option desc has
   been overwritten to, e.g., undo the option in a later phase. */
int applyopt_spec(
	struct single *sfd,
	int fd,
	struct opt *opt)
{
	if (fd < 0 && sfd != NULL)
		fd = sfd->fd;

	switch (opt->desc->optcode) {
	case OPT_USER:
	case OPT_USER_LATE:
		if (Fchown(fd, opt->value.u_uidt, -1) < 0) {
			Error3("fchown(%d, "F_uid", -1): %s",
			       fd, opt->value.u_uidt, strerror(errno));
			return -1;
		}
		break;
	case OPT_GROUP:
	case OPT_GROUP_LATE:
		if (Fchown(fd, -1, opt->value.u_gidt) < 0) {
			Error3("fchown(%d, -1, "F_gid"): %s",
			       fd, opt->value.u_gidt, strerror(errno));
			return -1;
		}
		break;
	case OPT_PERM:
	case OPT_PERM_LATE:
		if (Fchmod(fd, opt->value.u_modet) < 0) {
			Error3("fchmod(%d, %u): %s",
			       fd, opt->value.u_modet, strerror(errno));
			return -1;
		}
		break;
	case OPT_FTRUNCATE32:
		if (Ftruncate(fd, opt->value.u_off) < 0) {
			Error3("ftruncate(%d, "F_off"): %s",
			       fd, opt->value.u_off, strerror(errno));
			return -1;
		}
		break;
#if HAVE_FTRUNCATE64
	case OPT_FTRUNCATE64:
		if (Ftruncate64(fd, opt->value.u_off64) < 0) {
			Error3("ftruncate64(%d, "F_off64"): %s",
			       fd, opt->value.u_off64, strerror(errno));
			return -1;
		}
#endif /* HAVE_FTRUNCATE64 */
		break;
	case OPT_F_SETLK_RD:
	case OPT_F_SETLK_WR:
	case OPT_F_SETLKW_RD:
	case OPT_F_SETLKW_WR:
	{
		struct flock l;	/* Linux: <asm/fcntl.h> */
		l.l_type   = opt->desc->minor;
		l.l_whence = SEEK_SET;
		l.l_start  = 0;
		l.l_len    = LONG_MAX;
		l.l_pid    = 0;	/* hope this uses our current process */
		if (Fcntl_lock(fd, opt->desc->major, &l) < 0) {
			Error3("fcntl(%d, %d, {type=F_WRLCK,whence=SEEK_SET,start=0,len=LONG_MAX,pid=0}): %s", fd, opt->desc->major, strerror(errno));
			return -1;
		}
	}
	break;
	case OPT_SETUID_EARLY:
	case OPT_SETUID:
		if (Setuid(opt->value.u_uidt) < 0) {
			Error2("setuid("F_uid"): %s", opt->value.u_uidt,
			       strerror(errno));
			return -1;
		}
		break;
	case OPT_SETGID_EARLY:
	case OPT_SETGID:
		if (Setgid(opt->value.u_gidt) < 0) {
			Error2("setgid("F_gid"): %s", opt->value.u_gidt,
			       strerror(errno));
			return -1;
		}
		break;
	case OPT_SUBSTUSER_EARLY:
	case OPT_SUBSTUSER:
	{
		struct passwd *pwd;
		if ((pwd = getpwuid(opt->value.u_uidt)) == NULL) {
			Error1("getpwuid("F_uid"): no such user",
			       opt->value.u_uidt);
			return -1;
		}
		if (Initgroups(pwd->pw_name, pwd->pw_gid) < 0) {
			Error3("initgroups(%s, "F_gid"): %s",
			       pwd->pw_name, pwd->pw_gid, strerror(errno));
			return -1;
		}
		if (Setgid(pwd->pw_gid) < 0) {
			Error2("setgid("F_gid"): %s", pwd->pw_gid,
			       strerror(errno));
			return -1;
		}
		if (Setuid(opt->value.u_uidt) < 0) {
			Error2("setuid("F_uid"): %s", opt->value.u_uidt,
			       strerror(errno));
			return -1;
		}
#if 1
		if (setenv("USER", pwd->pw_name, 1) < 0) {
			Error1("setenv(\"USER\", \"%s\", 1): insufficient space",
			       pwd->pw_name);
			return -1;
		}
		if (setenv("LOGNAME", pwd->pw_name, 1) < 0) {
			Error1("setenv(\"LOGNAME\", \"%s\", 1): insufficient space",
			       pwd->pw_name);
			return -1;
		}
		if (setenv("HOME", pwd->pw_dir, 1) < 0) {
			Error1("setenv(\"HOME\", \"%s\", 1): insufficient space",
			       pwd->pw_dir);
			return -1;
		}
		if (setenv("SHELL", pwd->pw_shell, 1) < 0) {
			Error1("setenv(\"SHELL\", \"%s\", 1): insufficient space",
			       pwd->pw_shell);
			return -1;
		}
#endif
	}
	break;
#if defined(HAVE_SETGRENT) && defined(HAVE_GETGRENT) && defined(HAVE_ENDGRENT)
	case OPT_SUBSTUSER_DELAYED:
	{
		struct passwd *pwd;

		if ((pwd = getpwuid(opt->value.u_uidt)) == NULL) {
			Error1("getpwuid("F_uid"): no such user",
			       opt->value.u_uidt);
			return -1;
		}
		delayeduser_uid = opt->value.u_uidt;
		delayeduser_gid = pwd->pw_gid;
		if ((delayeduser_name = strdup(pwd->pw_name)) == NULL) {
			Error1("strdup("F_Zu"): out of memory",
			       strlen(pwd->pw_name)+1);
			return -1;
		}
		if ((delayeduser_dir = strdup(pwd->pw_dir)) == NULL) {
			Error1("strdup("F_Zu"): out of memory",
			       strlen(pwd->pw_dir)+1);
			return -1;
		}
		if ((delayeduser_shell = strdup(pwd->pw_shell)) == NULL) {
			Error1("strdup("F_Zu"): out of memory",
			       strlen(pwd->pw_shell)+1);
			return -1;
		}
		/* function to get all supplementary groups of user */
		delayeduser_ngids = sizeof(delayeduser_gids)/sizeof(gid_t);
		getusergroups(delayeduser_name, delayeduser_gids,
			      &delayeduser_ngids);
		delayeduser = true;
	}
	break;
#endif
	case OPT_CHROOT_EARLY:
	case OPT_CHROOT:
		if (Chroot(opt->value.u_string) < 0) {
			Error2("chroot(\"%s\"): %s", opt->value.u_string,
			       strerror(errno));
			return -1;
		}
		if (Chdir("/") < 0) {
			Error1("chdir(\"/\"): %s", strerror(errno));
			return -1;
		}
		break;
	case OPT_SETSID:
		if (Setsid() < 0) {
			Warn1("setsid(): %s", strerror(errno));
			if (Setpgid(getpid(), getppid()) < 0) {
				Warn3("setpgid(%d, %d): %s",
				      getpid(), getppid(), strerror(errno));
			} else {
				if (Setsid() < 0) {
					Error1("setsid(): %s", strerror(errno));
					return -1;
				}
			}
		}
		break;
	case OPT_SETPGID:
		if (Setpgid(0, opt->value.u_int) < 0) {
			Warn2("setpgid(0, "F_pid"): %s",
			      opt->value.u_int, strerror(errno));
		}
		break;
	case OPT_TIOCSCTTY:
	{
		int mytty;
		/* this code idea taken from ssh/pty.c: make pty controlling term. */
		if ((mytty = Open("/dev/tty", O_NOCTTY, 0640)) < 0) {
			Warn1("open(\"/dev/tty\", O_NOCTTY, 0640): %s", strerror(errno));
		} else {
			/*0 Info1("open(\"/dev/tty\", O_NOCTTY, 0640) -> %d", mytty);*/
#ifdef TIOCNOTTY
			if (Ioctl(mytty, TIOCNOTTY, NULL) < 0) {
				Warn2("ioctl(%d, TIOCNOTTY, NULL): %s",
				      mytty, strerror(errno));
			}
#endif
			if (Close(mytty) < 0) {
				Info2("close(%d): %s",
				      mytty, strerror(errno));
			}
		}
#ifdef TIOCSCTTY
		if (Ioctl(fd, TIOCSCTTY, NULL) < 0) {
			Warn2("ioctl(%d, TIOCSCTTY, NULL): %s", fd, strerror(errno));
		}
#endif
		if (Tcsetpgrp(0, getpid()) < 0) {
			Warn2("tcsetpgrp("F_pid"): %s", getpid(), strerror(errno));
		}
	}
	break;

#if _WITH_SOCKET
#if WITH_IP4 && (defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN))
	 case OPT_IP_ADD_MEMBERSHIP:
	    return xioapply_ip_add_membership(sfd, opt);
#endif /* WITH_IP4 && (defined(HAVE_STRUCT_IP_MREQ) || defined (HAVE_STRUCT_IP_MREQN)) */

#if WITH_IP4 && defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP)
	 case OPT_IP_ADD_SOURCE_MEMBERSHIP:
	    return xioapply_ip_add_source_membership(sfd, opt);
#endif /* WITH_IP4 && defined(HAVE_STRUCT_IP_MREQ_SOURCE) && defined(IP_ADD_SOURCE_MEMBERSHIP) */

#if WITH_IP6 && defined(HAVE_STRUCT_IPV6_MREQ)
	 case OPT_IPV6_JOIN_GROUP:
	    return xioapply_ipv6_join_group(sfd, opt);
#endif /* WITH_IP6 && defined(HAVE_STRUCT_IPV6_MREQ) */

#if WITH_IP6 && defined(HAVE_STRUCT_GROUP_SOURCE_REQ)
	 case OPT_IPV6_JOIN_SOURCE_GROUP:
	    return xioapply_ip6_join_source_group(sfd, opt);
#endif /* WITH_IP6 && defined(HAVE_STRUCT_IPV6_MREQ) */
#endif /* _WITH_SOCKET */

	default: Error1("applyopt_spec(opt:%s): INTERNAL option not implemented",
			opt->desc->defname);
		return -1;
	}
	return 0;
}

#if WITH_TERMIOS
int applyopts_termios_value(
	int fd,
	struct opt *opt)
{
	 if (((opt->value.u_uint << opt->desc->arg3) & opt->desc->minor) !=
	     (opt->value.u_uint << opt->desc->arg3)) {
	    Error2("option %s: invalid value %u",
		   opt->desc->defname, opt->value.u_uint);
	    return -1;
	 }
	 if (xiotermios_value(fd, opt->desc->major, opt->desc->minor,
			      (opt->value.u_uint << opt->desc->arg3) & opt->desc->minor) < 0) {
	    return -1;
	 }
	return 0;
}
#endif /* WITH_TERMIOS */

/* Note: not all options can be applied this way (e.g. OFUNC_SPEC with PH_OPEN)
   implemented are: OFUNC_FCNTL, OFUNC_SOCKOPT (probably not all types),
   OFUNC_TERMIOS_FLAG, OFUNC_TERMIOS_PATTERN, and some OFUNC_SPEC */
int applyopts(struct single  *sfd, int fd, struct opt *opts, enum e_phase phase)
{
   struct opt *opt;
   int rc = 0;

   opt = opts;
   while (opt && opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  (phase == PH_ALL || phase == opt->desc->phase)) {
	 if (applyopt(sfd, fd, opt) < 0)
	    rc = -1;
      }
      ++opt;
   }

#if WITH_TERMIOS
   if ((phase == PH_FD || phase == PH_ALL) && (fd >= 0 || sfd != NULL)) {
      xiotermios_flush(fd >= 0 ? fd : sfd->fd);
   }
#endif /* WITH_TERMIOS */
  return rc;
}

/* applies to fd all options belonging to phases */
/* note: not all options can be applied this way (e.g. OFUNC_SPEC with PH_OPEN)
   implemented are: OFUNC_FCNTL, OFUNC_SOCKOPT (probably not all types),
   OFUNC_TERMIOS_FLAG, OFUNC_TERMIOS_PATTERN, and some OFUNC_SPEC */
int applyopts2(
	struct single *sfd,
	int fd,
	struct opt *opts,
	unsigned int from,
	unsigned int to) {
   unsigned int ph;
   int rc = 0;

   for (ph = from; ph <= to; ++ph) {
      rc |= applyopts(sfd, fd, opts, ph);
   }
   return rc;
}

int applyopts_optgroup(
	struct single *sfd,
	int fd,
	struct opt *opts,
	groups_t groups)
{
	int i;
	int rc = 0;

	if (opts == NULL)
		return 0;

	i = 0;
	while (opts[i].desc != ODESC_END) {
		if (opts[i].desc == ODESC_DONE &&
		    opts[i].desc == ODESC_ERROR) {
			++i;
			continue;
		}
		if (opts[i].desc->group & groups) {
			rc |= applyopt(sfd, sfd->fd, &opts[i]);
		}
		++i;
	}
	return rc;
}

/* apply and consume all options of type FLAG and group.
   Return 0 if everything went right, or -1 if an error occurred. */
int applyopts_flags(struct opt *opts, groups_t group, flags_t *result) {
   struct opt *opt = opts;

   if (!opts)  return 0;

   while (opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  (opt->desc->group & group)) {
	 if (opt->desc->func == OFUNC_FLAG) {
	    if (opt->value.u_bool) {
	       *result |= opt->desc->major;
	    } else {
	       *result &= ~opt->desc->major;
	    }
	    opt->desc = ODESC_DONE;
	 } else if (opt->desc->func == OFUNC_FLAG_PATTERN) {
	    *result &= ~opt->desc->minor;
	    *result |= opt->desc->major;
	    opt->desc = ODESC_DONE;
	 }
      }
      ++opt;
   }
   return 0;
}


/* set the FD_CLOEXEC fcntl if the options do not set it to 0 */
int applyopts_cloexec(int fd, struct opt *opts) {
   bool docloexec = 1;

   if (!opts)  return 0;

   retropt_bool(opts, OPT_CLOEXEC, &docloexec);
   if (docloexec) {
      if (Fcntl_l(fd, F_SETFD, FD_CLOEXEC) < 0) {
	 Warn2("fcntl(%d, F_SETFD, FD_CLOEXEC): %s", fd, strerror(errno));
      }
   }
   return 0;
}

int applyopts_fchown(int fd, struct opt *opts) {
   uid_t user = -1;
   gid_t group = -1;

   retropt_uidt(opts, OPT_USER, &user);
   retropt_gidt(opts, OPT_GROUP, &group);

   if (user != (uid_t)-1 || group != (gid_t)-1) {
      if (Fchown(fd, user, group) < 0) {
	 Error4("fchown(%d, "F_uid", "F_gid"): %s", fd, user, group,
		strerror(errno));
	 return STAT_RETRYLATER;
      }
   }
   return 0;
}

/* Offset means a position in the sfd record where value is written.
   Caller must make sure that option is not yet consumed */
static int applyopt_offset(struct single *sfd, struct opt *opt) {
   unsigned char *ptr;

   ptr = (unsigned char *)sfd + opt->desc->major;
   switch (opt->desc->type) {
   case TYPE_BOOL:
      *(bool *)ptr = opt->value.u_bool;  break;
   case TYPE_INT:
      *(int *)ptr = opt->value.u_int;  break;
   case TYPE_DOUBLE:
      *(double *)ptr = opt->value.u_double;  break;
   case TYPE_TIMEVAL:
      *(struct timeval *)ptr = opt->value.u_timeval;  break;
   case TYPE_STRING_NULL:
      if (opt->value.u_string == NULL) {
	 *(char **)ptr = NULL;
	 break;
      }
      /* PASSTHROUGH */
   case TYPE_STRING:
      if ((*(char **)ptr = strdup(opt->value.u_string)) == NULL) {
	 Error1("strdup("F_Zu"): out of memory",
		strlen(opt->value.u_string)+1);
      }
      break;
   case TYPE_CONST:
      *(int *)ptr = opt->desc->minor;
      break;
   case TYPE_IP4NAME:
      memset(ptr, 0, sizeof(struct sockaddr_in));
      ((struct sockaddr_in *)ptr)->sin_addr   = opt->value.u_ip4addr;
      ((struct sockaddr_in *)ptr)->sin_family = PF_INET;
      break;
   case TYPE_IP4SOCK:
      memset(ptr, 0, sizeof(struct sockaddr_in));
      *(struct sockaddr_in *)ptr = opt->value.u_ip4sock;
      break;
   default:
      Error2("applyopt_offset(opt:%s): type %s not implemented",
	     opt->desc->defname, xiohelp_opttypename(opt->desc->type));
      return -1;
   }
   opt->desc = ODESC_DONE;
   return 0;
}

int applyopts_offset(struct single *sfd, struct opt *opts) {
   struct opt *opt;

   opt = opts; while (opt->desc != ODESC_END) {
      if ((opt->desc == ODESC_DONE || opt->desc == ODESC_ERROR) ||
	  opt->desc->func != OFUNC_OFFSET)  {
	 ++opt; continue; }

      applyopt_offset(sfd, opt);
      opt->desc = ODESC_DONE;
      ++opt;
   }
   return 0;
}

/* applies to sfd all OFUNC_EXT options belonging to phase
   returns -1 if an error occurred */
int applyopts_single(struct single *sfd, struct opt *opts, enum e_phase phase) {
   struct opt *opt;
   int rc = 0;

   if (!opts)
      return 0;

   opt = opts; while (opt->desc != ODESC_END) {
      if ((opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR) &&
	  (opt->desc->phase == phase && phase != PH_ALL)) {
	 if (opt->desc->func < OFUNC_XIO) {
		 rc = applyopt(NULL, sfd->fd, opt);
	 } else {
		 rc = applyopt(sfd, -1, opt);
	 }
	 if (rc == 0)
	    opt->desc = ODESC_DONE;
	 else
	    opt->desc = ODESC_ERROR;
      }
      ++opt;
   }
   return rc;
}

/* Applies to sfd or fd the given option.
   Note: not all options can be applied this way.
   Returns 0.
*/
static int applyopt(
	struct single *sfd,
	int fd,
	struct opt *opt)
{
	int lockrc;
	int rc = 0;

	if (opt->desc == ODESC_DONE || opt->desc == ODESC_ERROR)
		return 0;

	if (sfd != NULL && fd < 0)
		fd = sfd->fd;

	switch (opt->desc->func) {

	case OFUNC_SPEC:
	   rc = applyopt_spec(sfd, fd, opt);
	   break;
	case OFUNC_SEEK32:
		rc = applyopt_seek32(fd, opt);
		break;

#if HAVE_LSEEK64
	case OFUNC_SEEK64:
		rc = applyopt_seek64(fd, opt);
		break;
#endif /* HAVE_LSEEK64 */

	case OFUNC_FCNTL:
		rc = applyopt_fcntl(fd, opt);
		break;

	case OFUNC_IOCTL:
		rc = applyopt_ioctl(fd, opt);
		break;

	case OFUNC_IOCTL_MASK_LONG:
		rc = applyopt_ioctl_mask_long(fd, opt);
		break;

	case OFUNC_IOCTL_GENERIC:
		rc = applyopt_ioctl_generic(fd, opt);
		break;

#if _WITH_SOCKET
	case OFUNC_SOCKOPT:
		rc = applyopt_sockopt(fd, opt);
		break;

	case OFUNC_SOCKOPT_APPEND:
		rc = applyopt_sockopt_append(fd, opt);
		break;

	case OFUNC_SOCKOPT_GENERIC:
		rc = applyopt_sockopt_generic(fd, opt);
		break;
#endif /* _WITH_SOCKET */

#if HAVE_FLOCK
	case OFUNC_FLOCK:
		rc = applyopt_flock(fd, opt);
		break;
#endif /* defined(HAVE_FLOCK) */

#if WITH_TERMIOS
	case OFUNC_TERMIOS_FLAG:
		rc = xiotermiosflag_applyopt(fd, opt);
		break;

	case OFUNC_TERMIOS_VALUE:
		rc = applyopts_termios_value(fd, opt);
		break;

	case OFUNC_TERMIOS_PATTERN:
		rc = xiotermios_value(fd, opt->desc->major,
				      opt->desc->arg3, opt->desc->minor);
		break;

	case OFUNC_TERMIOS_CHAR:
		rc = xiotermios_char(fd, opt->desc->major, opt->value.u_byte);
		break;

#ifdef HAVE_TERMIOS_ISPEED
	case OFUNC_TERMIOS_SPEED:
		rc = xiotermios_speed(fd, opt->desc->major, opt->value.u_uint);
		break;
#endif /* HAVE_TERMIOS_ISPEED */

	case OFUNC_TERMIOS_SPEC:
		rc = xiotermios_spec(fd, opt->desc->optcode);
	   break;
#endif /* WITH_TERMIOS */

#if WITH_STREAMS
#define ENABLE_APPLYOPT
#include "xio-streams.c"
#undef ENABLE_APPLYOPT
#endif /* WITH_STREAMS */

     case OFUNC_OFFSET:
	rc = applyopt_offset(sfd, opt);
	break;

     case OFUNC_EXT:
      switch (opt->desc->optcode) {
#if 0
      case OPT_IGNOREEOF:
	 sfd->ignoreeof = true;
	 return 0;
      case OPT_CR:
	 sfd->lineterm = LINETERM_CR;
	 return 0;
      case OPT_CRNL:
	 sfd->lineterm = LINETERM_CRNL;
	 return 0;
#endif /* 0 */
      case OPT_READBYTES:
	 sfd->readbytes = opt->value.u_sizet;
	 sfd->actbytes  = sfd->readbytes;
	 break;

      case OPT_LOCKFILE:
	 if (sfd->lock.lockfile) {
	    Error("only one use of options lockfile and waitlock allowed");
	 }
	 sfd->lock.lockfile = strdup(opt->value.u_string);
	 sfd->lock.intervall.tv_sec  = 1;
	 sfd->lock.intervall.tv_nsec = 0;

	 if ((lockrc = xiolock(&sfd->lock)) < 0) {
	    /* error message already printed */
	    rc = -1;
	 }
	 if (lockrc) {
	    Error1("could not obtain lock \"%s\"", sfd->lock.lockfile);
	    rc = -1;
	 } else {
	    sfd->havelock = true;
	 }
	 break;

      case OPT_WAITLOCK:
	 if (sfd->lock.lockfile) {
	    Error("only one use of options lockfile and waitlock allowed");
	 }
	 sfd->lock.lockfile = strdup(opt->value.u_string);
	 sfd->lock.waitlock = true;
	 sfd->lock.intervall.tv_sec  = 1;
	 sfd->lock.intervall.tv_nsec = 0;

	 /*! this should be integrated into central select()/poll() loop */
	 rc = xiolock(&sfd->lock);
	 if (rc < 0)
	    break;
	 sfd->havelock = true;
	 break;

      default:
	 /* just store the value in the correct component of struct single */
	 if (opt->desc->type == TYPE_CONST) {
	    /* only for integral types compatible to int */
	    *(int *)(&((char *)sfd)[opt->desc->major]) = opt->desc->arg3;
	 } else {
	    memcpy(&((char *)sfd)[opt->desc->major], &opt->value, opt->desc->minor);
	 }
      }
      break;

     case OFUNC_OFFSET_MASK:
	/* Currently not used */
	/* Data target is some integer with independent bits in sfd;
	   set or unset the specified bits. */
	{
	   void *mask = (char *)sfd + opt->desc->major;
	   size_t masksize = opt->desc->minor;
	   unsigned long bit = opt->desc->arg3;
	   switch (masksize) {
	   case sizeof(int):
	      if (opt->value.u_bool) {
		 (*(int *)mask) |= bit;
	      } else {
		 (*(int *)mask) &= ~bit;
	      }
	      break;
	   default:
	      Info1("sizeof(int)="F_Zu, sizeof(int));
	      Error2("applyopts_single(opt:%s): INTERNAL: OFUNC_OFFSET_MASK size "F_Zu" not implemented",
		     opt->desc->defname, masksize);
	   }
	}
	break;

     case OFUNC_OFFSET_MASKS:
	/* An external (e.g. library) variable with independent bits is to be
	   manipulated. Here the data target is an array with size 2, the first
	   element holds the bit mask to be set, the second one those to be
	   cleared. Each related option sets or unsets a specific bit. */
	{
	   void *masks = (char *)sfd + opt->desc->major;
	   size_t masksize = opt->desc->minor;
	   unsigned long bit = opt->desc->arg3;
	   switch (masksize>>1) {
	   case sizeof(uint16_t):
	      if (opt->value.u_bool) {
		 ((uint16_t *)masks)[0] |= bit;
	      } else {
		 ((uint16_t *)masks)[1] |= bit;
	      }
	      break;
	   case sizeof(uint32_t):
	      if (opt->value.u_bool) {
		 ((uint32_t *)masks)[0] |= bit;
	      } else {
		 ((uint32_t *)masks)[1] |= bit;
	      }
	      break;
	   case sizeof(uint64_t):
	      if (opt->value.u_bool) {
		 ((uint64_t *)masks)[0] |= bit;
	      } else {
		 ((uint64_t *)masks)[1] |= bit;
	      }
	      break;
	   default:
	      Info1("sizeof(uint32_t)="F_Zu, sizeof(uint32_t));
	      Error2("applyopts_single(opt:%s): INTERNAL: OFUNC_OFFSET_MASKS size "F_Zu" not implemented",
		     opt->desc->defname, masksize);
	      rc = -1;
	      break;
	   }
	}
	break;

   case OFUNC_SIGNAL:
      rc = xio_opt_signal(sfd->para.exec.pid, opt->desc->major);
      break;

   default:
	Error2("applyopt(opt:%s): INTERNAL: ofunc %d not implemented",
	       opt->desc->defname, opt->desc->func);
	rc = -1;
	break;
   }
   if (rc == 0)
      opt->desc = ODESC_DONE;
   else if (rc < 0)
      opt->desc = ODESC_ERROR;
   /* rc > 0: no action */

   return 0;
}


/* apply remaining options to file descriptor, and tell us if something is
   still unused */
int _xio_openlate(struct single *sfd, struct opt *opts) {
   int numleft;
   int result;

   _xioopen_setdelayeduser();

   if ((result = applyopts(sfd, sfd->fd, opts, PH_LATE)) < 0) {
      return result;
   }
   if ((result = applyopts_single(sfd, opts, PH_LATE)) < 0) {
      return result;
   }
   if ((result = applyopts(sfd, sfd->fd, opts, PH_LATE2)) < 0) {
      return result;
   }
   if ((result = applyopts(sfd, sfd->fd, opts, PH_PASTEXEC)) < 0) {
      return result;
   }

   if ((numleft = leftopts(opts)) > 0) {
      showleft(opts);
      Error1("INTERNAL: %d option(s) remained unused", numleft);
      return -1;
   }
   return 0;
}

int dropopts(struct opt *opts, unsigned int phase) {
   struct opt *opt;

   if (phase == PH_ALL) {
      opts[0].desc = ODESC_END;
      return 0;
   }
   opt = opts; while (opt && opt->desc != ODESC_END) {
      if (opt->desc != ODESC_DONE && opt->desc != ODESC_ERROR &&
	  opt->desc->phase == phase) {
	 Debug1("ignoring option \"%s\"", opt->desc->defname);
	 opt->desc = ODESC_DONE;
      }
      ++opt;
   }
   return 0;
}

int dropopts2(struct opt *opts, unsigned int from, unsigned int to) {
   unsigned int i;

   for (i = from; i <= to; ++i) {
      dropopts(opts, i);
   }
   return 0;
}

int dumpopts(struct opt *opts)
{
	int i;

	if (opts == NULL) {
		Warn("dumpopts: NULL");
		return 0;
	}
	i = 0;
	while (opts[i].desc != ODESC_END) {
		if (opts[i].desc != ODESC_DONE &&
		    opts[i].desc != ODESC_ERROR) {
			Warn2("dumpopts(): %d %s", i, opts[i].desc->defname);
		}
		++i;
	}
	return 0;
}
